This has very little to do with anything other than my lifelong fascination in exploring space, which is why just over 21 hours ago I published the taster for this Post. That ‘Earthrise’ photograph and the one below changed forever how we feel about the home we all live on.
The famous “Blue Marble” shot.
First Full-View Photo of Earth
Photograph courtesy NASA Johnson Space Center
This famous “Blue Marble” shot represents the first photograph in which Earth is in full view. The picture was taken on December 7, 1972, as the Apollo 17 crew left Earth’s orbit for the moon. With the sun at their backs, the crew had a perfectly lit view of the blue planet.
December 7th, 1972. Coming up to 40 years ago. I was in my late-20s. This photograph touched me in ways that I still don’t understand. This is such a beautiful planet.
Thus Curiosity: NASA’s latest Mars rover is due to touch down at 05:31 UTC Monday 6th August. I decided to publish this at 04:31 UTC on the 6th one hour before the crucial and novel landing, or in terms of local time here in Payson, Arizona, 9.31 pm on the 5th August.
Wishing the Mission and all the hard-working people who have spent so many years working towards this critical point in time in space history the very best of luck! It will be wonderful wherever one is on this Planet to wake up on the 6th and hear that Curiosity has landed safely! And if you want to follow the Mission then NASA have a website devoted to the latest news.
Let me close by offering you a couple of videos from the fabulous BBC Horizon science series, full hour-long programme about NASA’s latest Mission to Mars.
NASA Engineer Adam Stelzner describes how he hopes the Curiosity rover will land.
Chief Project Scientist John Grotzinger talks about Curiosity’s scientific instruments.
Yet another stunningly powerful essay on TomDispatch.
Introduction
I do hope that as a result of Tom Engelhardt giving me written blanket permission to republish essays that appear on TomDispatch, for which I am ever grateful, many readers have gone across to the TomDispatch website and, consequently, quite a few of you have subscribed. The regular flow of essays from major names across the many fields of life is impressive.
Plus I want to harp back to a theme that I touched on during my introduction to Dianne Gray’s guest post on the 25th last, Dogs and life. That is that the vision of Learning from Dogs is to remind all of us that we have no option in terms of the long-term viability of our species than to acknowledge the power of integrity, so beautifully illustrated by our closest animal companion for tens of thousands of years, the domestic dog.
The water supply was available only an hour a day and falling. People — those who hadn’t moved north to cooler climes — were dying from the heat. Food was growing ever scarcer and the temperature soaring so that, as one reporter put it, you could “cook eggs on your sidewalk and cook soup in the oceans.” The year was 1961 and I was “there,” watching “The Midnight Sun,” a Twilight Zone episode in which the Earth was coming ever closer to the sun. (As it was The Twilight Zone, you knew there would be a twist at the end: in this case, you were inside the fevered dreams of a sick woman on a planet heading away from the sun and growing ever colder.)
In 1961, an ever-hotter planet was a sci-fi fantasy and the stuff of entertainment. No longer. Now, it’s the plot line for our planet and it isn’t entertaining at all. Just over a half-century later, we are experiencing, writes Bill McKibben in Rolling Stone, “the 327th consecutive month in which the temperature of the entire globe exceeded the 20th-century average, the odds of which occurring by simple chance were 3.7 x 10-99, a number considerably larger than the number of stars in the universe.”
Speaking personally, this summer, living through a staggering heat wave on the East coast (as in much of the rest of the country), I’ve felt a little like I’m in that fevered dream from The Twilight Zone, and a map of a deep-seated drought across 56% of the country and still spreading gives you a feeling for just why. Never in my life have I thought of the sun as implacable, but that’s changing, too. After all, the first six months of 2012 in the U.S. were 4.5 degrees Fahrenheit above the long-term norm and Colorado, swept by wildfires, was a staggering 6.4 degrees higher than the usual. TomDispatch regular William deBuys, author of A Great Aridness: Climate Change and the Future of the American Southwest, catches the feel of living in a West that’s aflame and drying out fast. (To catch Timothy MacBain’s latest Tomcast audio interview in which deBuys discusses where heat, fire, and climate change are taking us, click here or download it to your iPod here.) Tom
oooOOOooo
The Oxygen Planet Struts Its Stuff Not a “Perfect Storm” But the New Norm in the American West
By William deBuys
Dire fire conditions, like the inferno of heat, turbulence, and fuel that recently turned 346 homes in Colorado Springs to ash, are now common in the West. A lethal combination of drought, insect plagues, windstorms, and legions of dead, dying, or stressed-out trees constitute what some pundits are calling wildfire’s “perfect storm.”
They are only half right.
This summer’s conditions may indeed be perfect for fire in the Southwest and West, but if you think of it as a “storm,” perfect or otherwise — that is, sudden, violent, and temporary — then you don’t understand what’s happening in this country or on this planet. Look at those 346 burnt homes again, or at the High Park fire that ate 87,284 acres and 259 homes west of Fort Collins, or at the Whitewater Baldy Complex fire in New Mexico that began in mid-May, consumed almost 300,000 acres, and is still smoldering, and what you have is evidence of the new normal in the American West.
For some time, climatologists have been warning us that much of the West is on the verge of downshifting to a new, perilous level of aridity. Droughts like those that shaped the Dust Bowl in the 1930s and the even drier 1950s will soon be “the new climatology” of the region — not passing phenomena but terrifying business-as-usual weather. Western forests already show the effects of this transformation.
If you surf the blogosphere looking for fire information, pretty quickly you’ll notice a dust devil of “facts” blowing back and forth: big fires are four times more common than they used to be; the biggest fires are six-and-a-half times larger than the monster fires of yesteryear; and owing to a warmer climate, fires are erupting earlier in the spring and subsiding later in the fall. Nowadays, the fire season is two and a half months longer than it was 30 years ago.
All of this is hair-raisingly true. Or at least it was, until things got worse. After all, those figures don’t come from this summer’s fire disasters but from a study published in 2006 that compared then-recent fires, including the record-setting blazes of the early 2000s, with what now seem the good old days of 1970 to 1986. The data-gathering in the report, however, only ran through 2003. Since then, the western drought has intensified, and virtually every one of those recent records — for fire size, damage, and cost of suppression — has since been surpassed.
New Mexico’s Jemez Mountains are a case in point. Over the course of two weeks in 2000, the Cerro Grande fire burned 43,000 acres, destroying 400 homes in the nuclear research city of Los Alamos. At the time, to most of us living in New Mexico, Cerro Grande seemed a vision of the Apocalypse. Then, the Las Conchas fire erupted in 2011 on land adjacent to Cerro Grande’s scar and gave a master class in what the oxygen planet can do when it really struts its stuff.
The Las Conchas fire burned 43,000 acres, equaling Cerro Grande’s achievement,in its first fourteen hours. Its smoke plume rose to the stratosphere, and if the light was right, you could see within it rose-red columns of fire — combusting gases — flashing like lightning a mile or more above the land. Eventually the Las Conchas fire spread to 156,593 acres, setting a record as New Mexico’s largest fire in historic times.
It was a stunning event. Its heat was so intense that, in some of the canyons it torched, every living plant died, even to the last sprigs of grass on isolated cliff ledges. In one instance, the needles of the ponderosa pines were not consumed, but bent horizontally as though by a ferocious wind. No one really knows how those trees died, but one explanation holds that they were flash-blazed by a superheated wind, perhaps a collapsing column of fire, and that the wind, having already burned up its supply of oxygen, welded the trees by heat alone into their final posture of death.
It seemed likely that the Las Conchas record would last years, if not decades. It didn’t. This year the Whitewater Baldy fire in the southwest of the state burned an area almost twice as large.
Half Now, Half Later?
In 2007, Tom Swetnam, a fire expert and director of the laboratory of Tree-Ring Research at the University of Arizona, gave an interview to CBS’s 60 Minutes.Asked to peer into his crystal ball, he said he thought the Southwest might lose half its existing forests to fire and insects over the several decades to come. He immediately regretted the statement. It wasn’t scientific; he couldn’t back it up; it was a shot from the hip, a WAG, a wild-ass guess.
Swetnam’s subsequent work, however, buttressed that WAG. In 2010, he and several colleagues quantified the loss of southwestern forestland from 1984 to 2008. It was a hefty 18%. They concluded that “only two more recurrences of droughts and die-offs similar or worse than the recent events” might cause total forest loss to exceed 50%. With the colossal fires of 2011 and 2012, including Arizona’s Wallow fire, which consumed more than half-a-million acres, the region is on track to reach that mark by mid-century, or sooner.
But that doesn’t mean we get to keep the other half.
In 2007, the Intergovernmental Panel on Climate Change forecast a temperature increase of 4ºC for the Southwest over the present century. Given a faster than expected build-up of greenhouse gases (and no effective mitigation), that number looks optimistic today. Estimates vary, but let’s say our progress into the sweltering future is an increase of slightly less than 1ºC so far. That means we still have an awful long way to go. If the fires we’re seeing now are a taste of what the century will bring, imagine what the heat stress of a 4ºC increase will produce. And these numbers reflect mean temperatures. The ones to worry about are the extremes, the record highs of future heat waves. In the amped-up climate of the future, it is fair to think that the extremes will increase faster than the means.
At some point, every pine, fir, and spruce will be imperiled. If, in 2007, Swetnam was out on a limb, these days it’s likely that the limb has burned off and it’s getting ever easier to imagine the destruction of forests on a region-wide scale, however disturbing that may be.
More than scenery is at stake, more even than the stability of soils, ecosystems, and watersheds: the forests of the western United States account for 20% to 40% of total U.S. carbon sequestration. At some point, as western forests succumb to the ills of climate change, they will become a net releaser of atmospheric carbon, rather than one of the planet’s principle means of storing it.
Contrary to the claims of climate deniers, the prevailing models scientists use to predict change are conservative. They fail to capture many of the feedback loops that are likely to intensify the dynamics of change. The release of methane from thawing Arctic permafrost, an especially gloomy prospect, is one of those feedbacks. The release of carbon from burning or decaying forests is another. You used to hear scientists say, “If those things happen, the consequences will be severe.” Now they more often skip that “if” and say “when” instead, but we don’t yet have good estimates of what those consequences will be.
Ways of Going
There have always been droughts, but the droughts of recent years are different from their predecessors in one significant way: they are hotter. And the droughts of the future will be hotter still.
June temperatures produced 2,284 new daily highs nationwide and tied 998 existing records. In most places, the shoe-melting heat translated into drought, and the Department of Agriculture set a record of its own recently by declaring 1,297 dried-out counties in 29 states to be “natural disaster areas.” June also closed out the warmest first half of a year and the warmest 12-month period since U.S. record keeping began in 1895. At present, 56% of the continental U.S. is experiencing drought, a figure briefly exceeded only in the 1950s.
Higher temperatures have a big impact on plants, be they a forest of trees or fields of corn and wheat. More heat means intensified evaporation and so greater water stress. In New Mexico, researchers compared the drought of the early 2000s with that of the 1950s. They found that the 1950s drought was longer and drier, but that the more recent drought caused the death of many more trees, millions of acres of them. The reason for this virulence: it was 1ºC to 1.5ºC hotter.
The researchers avoided the issue of causality by not claiming that climate changecaused the higher temperatures, but in effect stating: “If climate change is occurring, these are the impacts we would expect to see.” With this in mind, they christened the dry spell of the early 2000s a “global-change-type drought” — not a phrase that sings but one that lingers forebodingly in the mind.
No such equivocation attends a Goddard Institute for Space Studies appraisal of the heat wave that assaulted Texas, Oklahoma, and northeastern Mexico last summer. Their report represents a sea change in high-level climate studies in that they boldly assert a causal link between specific weather events and global warming. The Texas heat wave, like a similar one in Russia the previous year, was so hot that its probability of occurring under “normal” conditions (defined as those prevailing from 1951 to 1980) was approximately 0.13%. It wasn’t a 100-year heat wave or even a 500-year one; it was so colossally improbable that only changes in the underlying climate could explain it.
The decline of heat-afflicted forests is not unique to the United States. Global research suggests that in ecosystems around the world, big old trees — the giants of tropical jungles, of temperate rainforests, of systems arid and wet, hot and cold — are dying off.
More generally, when forest ecologists compare notes across continents and biomes, they find accelerating tree mortality from Zimbabwe to Alaska, Australia to Spain. The most common cause appears to be heat stress arising from climate change, along with its sidekick, drought, which often results when evaporation gets a boost.
Fire is only one cause of forest death. Heat alone can also do in a stand of trees. According to the Texas Forest Service, between 2% and 10% of all the trees in Texas, perhaps half-a-billion or so, died in last year’s heat wave, primarily from heat and desiccation. Whether you know it or not, those are staggering figures.
Insects, too, stand ready to play an ever-greater role in this onrushing disaster. Warm temperatures lengthen the growing season, and with extra weeks to reproduce, a population of bark beetles may spawn additional generations over the course of a hot summer, boosting the number of their kin that that make it to winter. Then, if the winter is warm, more larvae survive to spring, releasing ever-larger swarms to reproduce again. For as long as winters remain mild, summers long, and trees vulnerable, the beetles’ numbers will continue to grow, ultimately overwhelming the defenses of even healthy trees.
We now see this throughout the Rockies. A mountain pine beetle epidemic has decimated lodgepole pine stands from Colorado to Canada. About five million acres of Colorado’s best scenery has turned red with dead needles, a blow to tourism as well as the environment. The losses are far greater in British Columbia, where beetles have laid waste to more than 33 million forest acres, killing a volume of trees three times greater than Canada’s annual timber harvest.
Foresters there call the beetle irruption “the largest known insect infestation in North American history,” and they point to even more chilling possibilities. Until recently, the frigid climate of the Canadian Rockies prevented beetles from crossing the Continental Divide to the interior where they were, until recently, unknown. Unfortunately, warming temperatures have enabled the beetles to top the passes of the Peace River country and penetrate northern Alberta. Now a continent of jack pines lies before them, a boreal smorgasbord 3,000 miles long. If the beetles adapt effectively to their new hosts, the path is clear for them to chew their way eastward virtually to the Atlantic and to generate transformative ecological effects on a gigantic scale.
The mainstream media, prodded by recent drought declarations and other news, seem finally to be awakening to the severity of these prospects. Certainly, we should be grateful. Nevertheless, it seems a tad anticlimactic when Sam Champion, ABC News weather editor, says with this-just-in urgency to anchor Diane Sawyer, “If you want my opinion, Diane, now’s the time we start limiting manmade greenhouse gases.”
One might ask, “Why now, Sam?” Why not last year, or a decade ago, or several decades back? The news now overwhelming the West is, in truth, old news. We saw the changes coming. There should be no surprise that they have arrived.
It’s never too late to take action, but now, even if all greenhouse gas emissions were halted immediately, Earth’s climate would continue warming for at least another generation. Even if we surprise ourselves and do all the right things, the forest fires, the insect outbreaks, the heat-driven die-offs, and other sweeping transformations of the American West and the planet will continue.
One upshot will be the emergence of whole new ecologies. The landscape changes brought on by climate change are affecting areas so vast that many previous tenants of the land — ponderosa pines, for instance — cannot be expected to recolonize their former territory. Their seeds don’t normally spread far from the parent tree, and their seedlings require conditions that big, hot, open spaces don’t provide.
What will develop in their absence? What will the mountains and mesa tops of the New West look like? Already it is plain to see that scrub oak, locust, and other plants that reproduce by root suckers are prospering in places where the big pines used to stand. These plants can be burned to the ground and yet resprout vigorously a season later. One ecologist friend offers this advice, “If you have to be reincarnated as a plant in the West, try not to come back as a tree. Choose a clonal shrub, instead. The future looks good for them.”
In the meantime, forget about any sylvan dreams you might have had: this is no time to build your house in the trees.
William deBuys, a TomDispatch regular, is the author of seven books, most recently A Great Aridness: Climate Change and the Future of the American Southwest (Oxford, 2011). He has long been involved in environmental affairs in the Southwest, including service as founding chairman of the Valles Caldera Trust, which administers the 87,000-acre Valles Caldera National Preserve in New Mexico. To listen to Timothy MacBain’s latest Tomcast audio interview in which deBuys discusses where heat, fire, and climate change are taking us, click here or download it to your iPod here.
Four days ago, there was a post on Learning from Dogs under the heading of We are what we eat! As is often the way, subsequently after writing that article (back on the 8th), there was a flurry of other associated items that I wanted to bring to your attention today.
The first was on the website of The Permaculture Research Institute of Australia. It was a very inspiring two-part article written by Anthea Hudson under the title of Preparing Our Children For a Resilient Future.
Part One was all about recycling and our role as facilitators. Here’s a little challenge for you, lifted from that first part,
Landfill — Our Dirty Legacy
Let’s begin by understanding a bit about how long the things we send to landfill last, before they break down.
Have a look at the list below and see if you can guess the order these items should be placed in, from the things that break down quickest, to those that take the longest. Then have a guess as to how long you think each one will take to break down.
paper bag
plastic jug
cigarette butt
glass bottle or jar
banana
aluminium can (soft drink can)
leather boot or shoe
plastic 6-pack rings
Styrofoam cup
cotton pillowcase
rubber sole of the leather boot (above)
wool sock or scarf
tin can (e.g. baked beans or soup can)
Don’t cheat by looking at the answers below, until you have made your own list.
Think you have worked it out? Now go here and check your answers! You may be suprised.
Part One is very comprehensive and Part Two even more so. Indeed, it serves as a wonderful check-list of all the reasons why and how we can be more responsible for what goes into our stomachs. It really is a most comprehensive review, nay tutorial, on how to grow your own. It includes such gems as this,
This video was created by the 2009 spring plant physiology class at Plymouth State University.
Next to the bad and ugly stuff.
Anyone who was shocked by the revelation of the harm being done to bees highlighted in my recent Post (the full article is on Food Freedom News) and to us humans,
A recent study showed that every human tested had the world’s best-selling pesticide, Roundup, detectable in their urine at concentrations between five and twenty times the level considered safe for drinking water.
will be further shocked, alarmed and (fill in your words) by this two-hour film introduced by Gary Null. We all need to watch it and yet I’m bound to say it will ruin your day! Jean and I have watched it in full and to all my readers, especially American ones, I say this – do watch this video, Please!
Progressive Radio Network presents
A Gary Null Production
WAR ON HEALTH: The FDA’s Cult of Tyranny
Introduced by the director (from his speech at the world premiere in New York City, June 15, 2012)
In the near future, American medical practice may change dramatically for the worse. No longer will maximal dose natural supplements—vitamins, natural compounds, and scientifically proven medicinal herbs—be available over the counter in local health and grocery stores. Holistic practice, which relies upon non-prescription natural treatments instead of Big Pharma drugs prescribed life-long, will diminish. American healthcare will be imprisoned, patients will be forced to abide by a single medical paradigm defined by corporate drug and food executives and dictated by a government enforcement agency, the Food and Drug Administration (FDA). This is the bleak scenario if the FDA succeeds in limiting Americans’ options to prevent and treat diseases.
‘War on Health’ is the first documentary detailing and challenging the FDA agenda and its allegiance with the international Codex Alimentarius, which hopes to establish a monolithic food and health regime. Betraying its founding mandate to assure drug, food and chemical safety in the interests of public health, the FDA today is a repressive bureaucracy serving pharmaceutical and agricultural greed and profits. Vaccines, medical devices, prescription drugs are fast tracked at alarming rates through the FDA at the expense of scientific oversight to assure their efficacy and safety. The
result is hundreds of thousands premature deaths annually from pharmaceutical drugs, vaccines and medical devices and an epidemic of medical incompetence and fraud sanctioned by federal health officials.
Featuring many pioneering American and European attorneys, physicians, medical researchers and advocates of health freedom, War on Health lifts the veil on FDA’s militaristic operations against organic food providers and alternative physicians. The film’s conclusion is perfectly clear: the FDA is a tyrannical cult founded upon the denial of sound medical science with little intention to improve the nation’s health and prevent disease.
Written and Directed by Gary Null
Produced by Valerie Van Cleve
Associate Producer: Richard Gale
Editor: Richie Williamson
Offline Editing: Valerie Van Cleve, L.A. Jones
Camera Operators: Marcello Coppuchino, Peter Bonilla, David Grier, L.A. Jones
Gregory Jason Russ, Jake Hammer Mesmire, Edson Tanakae, Valerie Van Cleve, Richie Williamson
As my dear friend of many, many years, Richard M., has a habit of saying, “Must go now, need to get back to Planet Earth!“
The amazing development of electronics over 50 years.
(A republication of a post first shown on the 13th August, 2009)
The calendar reliably informs me that this is my 65th year. My brain, of course, lags somewhat in accepting this!
My step-father during my early teenage years worked for Elliott Brothers (the link goes to an interesting history of the firm that started in 1804) in Borehamwood, just north of London. He encouraged me to fiddle with ‘steam’ radios and
try and understand how these basic circuits worked. It was then a small step to deciding to become a radio amateur, popularly known as a radio ham! In those days it was a case of some pretty intensive studying to pass a Theory exam as well as being able to pass an exam in sending and receiving Morse code.
So joining the local radio society seemed like a sensible idea. That was (and still is!) called the Radio Society of Harrow. That it is still in existence after all these years is truly delightful. Those Friday night sessions at the Society and extra-curricular classes on Sunday morning at Ron Ray’s (G2TA) house, an hour’s bicycle ride away from home, ensured that shortly after my 16th birthday I was granted a Licence, G3PUK. It was a very proud moment.
Anyway, once granted a licence it was time to build my own radio transmitter. Most of the details have been lost in the mists of time but what is recalled was that the final amplifier was a pair of 803s driving an 813 (These are radio valve numbers). It sounds like something from the ark! But again ploughing the inexhaustible files of the Web, it’s possible to see what these radio valves looked like. Thanks to the National Valve Museum.
Here are pictures, courtesy of the National Valve Museum of those two radio valves:
803 – The substantial wide glass tube envelope is 58 mm in diameter (2 1/4 in) and, excluding the special five pin base pins, is 216 mm tall (8 1/2 in).
813 The classic envelope is substantial at 60 mm diameter (2 1/3 in) and 170 mm (6 2/3 in) long excluding the special base pins. The anode is 53 mm long and 48 mm wide. The metal is 1 mm thick.
803 radio valve813 radio valve
It’s difficult, today, to imagine devices which are essentially diodes (well, technically the 803 was a pentode and the 813 a tetrode) being between 6 and 8 inches tall!
My own self-build transmitter had not really been successful emitting more heat than light, so to speak. Literally, in the sense that these large radio valves kept me warm in my converted garden shed at the bottom of the garden. They also completely wiped out TV reception for those households with a 1/4 mile range that had invested in early television sets! It was time to move on to the R1155.
Around this era, less than 20 years after the end of the War in Europe in 1945, war-surplus equipment was widely available including ‘compact’ transmitter-receiver units.
One popular one was the RAF R1155 which had been fitted to RAF Lancaster bombers and RAF marine craft. It was also fitted to the Sunderland flying boat. This information plus the photos below is from this fascinating web site for those wishing to be ‘geeky’ about this.
RAF R1155B transreceiverInternal view of the R1155B
Just compare the view on the right to the inside of your domestic radio or your cell phone.
A lot happens in 50 years!
My personal journey now leaps to 1978 and I have just left IBM UK having had 8 fabulous years with them as an Office Products salesman. My fledging company, Dataview Ltd, has just become the 8th Commodore Computer (CBM) dealer in the UK, based in a small office in Colchester, Essex, about 50 miles north-east of London.
The CBM PET (Personal Electronic Transactor) released in 1977 initially with a calculator type keyboard was useless for any business application but soon came out with a typewriter sized keyboard, making it a more viable business
CBM computer, circa 1978
machine. Today, as this is typed on an ‘old’ laptop with 2GB RAM, it seems unbelievable that these CBMs were sold with between 4k and 96k of RAM (memory) and no hard disk, although one could purchase an add-on that comprised dual 5 1/2 inch floppy disk drives.
YouTube obligingly finds a short video on the Commodore PET for those really wishing to enjoy the nostalgia!
So to turn to the 21st century and to run out of understanding. We appear to live in a world of multi-later printed circuit boards of unimaginable (to me) component density, assuming that the word ‘component’ is even relevant today.
Haven’t a clue what this is but it’s very modern.
What an amazing period it has been!
A long way from yesterday!
Now let me see was it Pin 920 to Pin 140, or Pin14 to Pin 860 connected to Pin 56 ………?
So why do we insist of manipulating the genetics of food!
I read somewhere recently, and of course now can’t find the reference, that the genetic modification of our food represents as big a danger to the long-term survival of man as does the damage to our biosphere.
So a recent item on the blog Food Freedom News jumped out at me. This was an item that was introduced as, “The author of Seeds of Destruction (about Monsanto) has a new piece out on pesticides and mass animal deaths… very sobering.”
Clicking on the ‘new piece’ link takes one to here, from which I quote the opening paragraphs,
“A recent study showed that every human tested had the world’s best-selling pesticide, Roundup, detectable in their urine at concentrations between five and twenty times the level considered safe for drinking water.”
Birds and bees are something most of us take for granted as part of nature. The expression “teaching about the birds and the bees” to explain the process of human reproduction to young people is not an accidental expression. Bees and birds contribute to the essence of life on our planet. A study by the US Department of Agriculture estimated that “…perhaps one-third of our total diet is dependent, directly or indirectly, upon insect-pollinated plants.”
The honey bee, Apis mellifera, is the most important pollinator of agricultural crops. Honey bees pollinate over 70 out of 100 crops that in turn provide 90% of the world’s food. They pollinate most fruits and vegetables–including apples, oranges, strawberries, onions and carrots. But while managed honey bee populations have increased over the last 50 years, bee colony populations have decreased significantly in many European and North American nations. Simultaneously, crops that are dependent on insects for pollination have increased. The phenomenon has received the curious designation of Colony Collapse Disorder (CCD), implying it could be caused by any number of factors. Serious recent scientific studies however point to a major cause: use of new highly toxic systemic pesticides in agriculture since about 2004.
That first paragraph alone made me sit up, “A recent study showed that every human tested had the world’s best-selling pesticide, Roundup, detectable in their urine at concentrations between five and twenty times the level considered safe for drinking water.” What a strange race we are!
Wlliam F. Engdahl
Then it was easy to find out more information about the author of the book Seeds of Destruction, William F. Engdahl, including his website. Mr. Engdahl is clearly no stranger to controversy as this YouTube video illustrates,
Back to that Food Freedom article. Further on, there is evidence of the size of the problem in the UK,
Alarming UK results
A private UK research organization, Buglife and the Soil Association, undertook tests to try to determine cause of the bee death. They found that the decline was caused in part by a group of pesticides called neonicotinoids. Neonicotinoids are “systemic” chemicals that kill insects by getting into the cell of the plant. In Britain it’s widely used for crops like oilseed rape and for production of potted plants.
The neonicotinoids are found in the UK in products including Chinook, used on oilseed rape and Bayer UK 720, used in the production of potted plants which then ends up in gardens and homes around the country. The new study examined in detail the most comprehensive array of peer-reviewed research into possible long-term effects of neonicotinoid use. Their conclusion was that neonicotinoid pesticides damage the health and life cycle of bees over the long term by affecting the nervous system. The report noted, “Neonicotinoids may be a significant factor contributing to current bee declines and could also contribute to declines in other non-target invertebrate species.” The organization called for a total ban on pesticides containing any neonicotinoids.
The president of the UK Soil Association, Peter Melchett, told the press that pesticides were causing a continued decline in pollinating insects, risking a multimillion pound farming industry. “The UK is notorious for taking the most relaxed approach to pesticide safety in the EU; Buglife’s report shows that this puts at risk pollination services vital for UK agriculture,” he said.
Indeed in March 2012 Sir Robert Watson, Chief Scientist at the British Government’s Department of Environment announced that his government was reconsidering its allowance of neonicotinoid use in the UK. Watson told a British newspaper, “We will absolutely look at the University of Stirling work, the French work, and the American work that came out a couple of months ago. We must look at this in real detail to see whether or not the current British position is correct or is incorrect. I want this all reassessed, very, very carefully.” To date no policy change has ensued however. Given the seriousness of the scientific studies and of the claims of danger, a prudent policy would have been to provisionally suspend further uise of neonicotinoids pending further research. No such luck.
And if the harm to bees wasn’t serious enough, try this extract,
Effect on Human Brain?
But most alarming of all is the evidence that exposure to neonicotinides has horrific possible effects on humans as well as on birds and bees.
Professor Henk Tennekes describes the effects:
“Today the major illnesses confronting children in the United States include a number of psychosocial and behavioral conditions. Neurodevelopmental disorders, including learning disabilities, dyslexia, mental retardation, attention deficit disorder, and autism – occurrence is more prevalent than previously thought, affecting 5 percent to 10 percent of the 4 million children born in the United States annually. Beyond childhood, incidence rates of chronic neurodegenerative diseases of adult life such as Parkinson’s disease and dementia have increased markedly. These trends raise the possibility that exposures in early life act as triggers of later illness, perhaps by reducing the numbers of cells in essential regions of the brain to below the level needed to maintain function in the face of advancing age. Prenatal and childhood exposures to pesticides have emerged as a significant risk factor explaining impacts on brain structure and health that can increase the risk of neurological disease later in life.”
There is also growing evidence suggesting persistent exposure to plants sprayed with neonicotinoids could be responsible for damage to the human brain, including the recent sharp rise in incidents of autism in children.
This really is an article that you should read in full, which also includes a full bibliography and notes section. Plus you can leave your responses as a comment – go for it!
Such a beautiful and mutually-important relationship.
I didn’t plan to write more about this subject thinking that my last two posts, Woof at the Door and Prof. Pat Shipman, more than covered the theme; indeed much more.
But then a flurry of other articles conspired to pass my desk.
In no particular order there was an article on the Big Think website, Do Dogs Speak Human? As the article opened,
What’s the Big Idea?
Perhaps the better question is, do humans speak dog? Either way, the debate over whether language is unique to humans, or a faculty also possessed by wild and domestic animals from dogs to apes to dolphins, is an interesting one. The answer depends on exactly how we define “language,” and who’s doing the talking, says David Bellos, the Booker prize-winning translator.
The article includes this three-minute video,
and concludes,
Broadly, a language is a mode of expression. “The argument that only human language is language and that animal communication systems, however sophisticated they are — and some of them are quite sophisticated — are not languages because they consist of discrete signals is a circular argument,” he argues. “It’s a self-fulfilling thing. And I think we should be a little bit more interested in the complexity and the variability of animal communication systems and less rigid about this distinction between what is a language and what is not a language.”
For now, we’re happy with this:
The June 30th edition of The Economist had an article entitled, Can dogs really show empathy towards humans? (You may have to register (free) to view this.) That report ends, as follows,
As they report in Animal Cognition, “person-oriented behaviour” did sometimes take place when either the stranger or the owner hummed, but it was more than twice as likely to occur if someone was crying. This indicated that dogs were differentiating between odd behaviour and crying. And of the 15 dogs in the experiment that showed person-oriented responses when the stranger cried, all of them directed their attention towards the stranger rather than their owner.
These discoveries suggest that dogs do have the ability to express empathetic concern. But although the results are clear enough, Dr Custance argues that more work needs to be done to be sure that such behaviour is true empathy. It is possible, she points out, that the dogs were drawing on previous experiences in which they were rewarded for approaching distressed human companions. Dog-owners, however, are unlikely to need any more convincing.
It was then an easy follow-up to that Animal Cognition article which is available online here; here’s the abstract,
Empathy covers a range of phenomena from cognitive empathy involving metarepresentation to emotional contagion stemming from automatically triggered reflexes.
An experimental protocol first used with human infants was adapted to investigate empathy in domestic dogs. Dogs oriented toward their owner or a stranger more often when the person was pretending to cry than when they were talking or humming. Observers, unaware of experimental hypotheses and the condition under which dogs were responding, more often categorized dogs’ approaches as submissive as opposed to alert, playful or calm during the crying condition. When the stranger pretended to cry, rather than approaching their usual source of comfort, their owner, dogs sniffed, nuzzled and licked the stranger instead.
The dogs’ pattern of response was behaviorally consistent with an expression of empathic concern, but is most parsimoniously interpreted as emotional contagion coupled with a previous learning history in which they have been rewarded for approaching distressed human companions.
Pat Shipman showing how animals were intimately involved in the development of early humans.
Yesterday’s fascinating post was predominately taken up by a long and deeply interesting essay by Prof. Pat Shipman, The Woof at the Door.
Today, I want to report further on Pat Shipman primarily by looking at her book The Animal Connection.
What makes us human?
Let me do no more than quote from page 259,
Domesticating animals provided a new sort of benefit. They were living tools first and meat sources later, only when their useful lives were over or circumstances required. The crucial importance of animal domestication in modern life shows that our relationship with animals selected for a set of communication skills and abilities to observe, draw conclusions and make connections among different observations that had been increasingly important since at least 2.6 million years ago. The relationship between such skills and modern behaviors that characterize humanity is clear.
Prof. Shipman also confirms that the first domestication was of the dog at 32,000 years ago and goes on to say,
Other types of domestic animals provide enhanced protection for people, dwellings, stored crops, and other livestock. Dogs and cats are the obvious examples, but herders have recently started touting llamas as guardians for flocks of sheep.
The domesticated carnivores also provide important assistance in hunting. Dogs are better trackers than humans; they are faster runners, take larger prey, and will hunt with humans. Cats hunt solitarily and are far superior to humans at catching rodents that can decimate crops or carry disease. Dogs hunt with you; cats hunt for you; but both offer an advantage. (p.254)
As I said, it’s a fascinating book and one that is already reshaping my knowledge about the early evolution of man. And in terms of reshaping knowledge about early man, do go across to Pat Shipman’s Blog, The Animal Connection.
You can read a full review with links to a number of book sellers here. Let me close by using this praise for the book by Jeffrey Moussaieff Masson. (Masson’s book Dogs Never Lie About Love is just a few feet from me as I write this, a deeply moving book for all dog lovers.)
This is what Jeffrey Masson wrote about The Animal Connection,
Pat Shipman has written one of the most important books on the human-animal connection ever. One might even say it is the single most important book, possibly the only one, to look at our deep connection to animals over the entire evolutionary history of our species.
The grandeur of the ancient relationship between dog and man.
A couple of weeks ago, I came across a fascinating article that had been published in American Scientist magazine (online version) written by Professor Pat Shipman. The article provided the background and evidence to support the proposition that dogs may have been man’s best friend for thousands of years longer than we realized.
Very quickly I came across Pat Shipman’s website and learnt that this is one clever lady. As her About page explains,
CAREER SUMMARY
Prof. Shipman
I am internationally known as a paleoanthropologist and conducted research for many years in Africa on human evolution and the animal communities in which humans evolved.
I have conducted research on material from sites in France, Spain, the United States, Java, Ethiopia, Kenya, Tanzania, and South Africa. I have written more than 50 scholarly articles, appearing in journals such as Nature, Science, Journal of Archaeological Science, Paleobiology, Journal of Human Evolution, and Current Anthropology.
I have written more than 100 articles in popular science magazines or newspapers, including The Guardian, The New York Times, The Times Literary Supplement, American Scientist, Discover, and Natural History. Two of my books were featured on the cover of The New York Times Book Review: The Neadertals and Taking Wing. Taking Wing won the Phi Beta Kappa prize for science book of the year and was a runner-up for the LA Times Science Book prize.
My book on Homo erectus, Wisdom of the Bones, was co-authored by Alan Walker and won the Rhone-Poulenc Prize in science writing.
My books have been widely praised as compelling, accessible, and highly readable, with a strong narrative thread. Reviewers frequently comment upon the meticulous research that underpins my books, a feature I consider to be my trademark.
My most recent popular science book, The Ape in the Tree, written with Alan Walker, was called by The Vancouver Sun “part adventure story, part cutting-edge science.” In a Science magazine review, the book was praised as “a fine account of new ways to puzzle out the behaviors of fossilized animals from odd scraps of bone.” Another reviewer raved, “Wonderfully engaging and insightful, The Ape in the Tree, is sure to become a classic in the literature on human origins.” MacArthur fellow John Fleagle wrote in the Quarterly Review of Biology, “Science writing doesn’t get any better than this.” In 2009, this book was awarded the W.W. Howells Book Prize by the American Anthropological Association.
In Britain, my new biography of Mata Hari, Femme Fatale, was selected as The Book of the Week by BBC radio. Each day during the week, an actress gave dramatic readings from the book on the air for fifteen minutes.
With The Animal Connection, I return to paleoanthropology and consider the influence of our connection with animals on human evolution and the origin of modern human behavior.
See what I mean!
Anyway, as you can readily understand, as the author of a blog that writes about what we can learn from this ancient relationship between the dog and man, it struck me as wonderful if I might be permitted to republish in full that article. Prof. Shipman promptly gave me such permission.
So today, I am doing just that and tomorrow I want to write more about Pat Shipman’s latest book, The Animal Connection.
oooOOOooo
The Woof at the Door
Dogs may have been man’s best friend for thousands of years longer than we realized
It’s funny how much difference a single letter makes. A “woof” at the door is a very different thing from a wolf at the door. One is familiar, domestic, reassuring; the other is a frightening apparition of imminent danger. The distinction between our fond companions and the ferocious predator of northern climes goes back a long way.
Dogs are descended from wolves, probably the gray wolf. Some scientists argue that, because dogs and wolves can and do interbreed, they shouldn’t be considered to be separate species at all. They believe that domestic dogs are only a subspecies or variant of the gray wolf, Canis lupus, and ought to be called Canis lupus familiaris (the familiar or domestic wolf) instead of Canis familiaris (the familiar or domestic dog). Although the ability to interbreed and produce fertile offspring is a tried-and-true criterion for recognizing that two populations are really variants of a single species, the reality is more nuanced. We cannot know whether dog-wolf hybrids will thrive and survive, or die out, in the long run.
Prehistoric cave paintings rarely depict wolves or other carnivores. This watercolor tracing of a cave painting was made by the archaeologist Abbé Henri Breuil in the early 1900s from the Grotte de Font-de-Gaume in France. The 17,000-year-old cave paintings number about 250 and mostly show bison and mammoths—only one is thought to be a wolf. Canids may have been domesticated by this point; it is possible that portraying wolves and humans was taboo. Paul Bahn
Certainly we expect to be able to distinguish a dog from a wolf if we see one. Of course, domestic dogs are wildly variable in size and shape, thanks to several hundred years of selective breeding. Some have long, fluffy coats; others have tightly curled, nearly waterproof coats and webbed feet. Some are leggy and swift, whereas others are solid, stoutly built guard dogs. Some fit neatly into a pocketbook, but others barely fit into a compact car. As Robert K. Wayne of the University of California at Los Angeles declares, “Dogs show more diversity in appearance than any other mammal.”
What is it that tells us this animal is “dog” and that one is “wolf?”
Modern wolves and dogs can be distinguished reasonably easily by their appearance. The most telling feature of dogs is the snout, which is significantly shorter and wider than wolves’ snouts. Only a few dog breeds with extremely elongated, slender snouts, such as Irish wolfhounds, surpass wolves in “snoutiness.”
But a crucial part of the difference we perceive is in the animals’ manner and attitude towards humans. Domesticated dogs are just that: canids that live in the house or domicile of humans. They are genetically disposed to seek out human attention and approval and to accept human leadership. Wolves are not.
How did this important change come about? Probably in the distant past, humans took in a wolf cub, or even a whole litter of cubs, and provided shelter, food and protection. As the adopted cubs matured, some were aggressive, ferocious and difficult to handle; those probably ended up in the pot or were cast out. The ones that were more accepting of and more agreeable to humans were kept around longer and fed more. In time, humans might have co-opted the natural abilities of canids, using the dogs’ keen noses and swift running skills, for example, to assist in hunting game. If only the most desirable dogs were permitted to breed, the genes encoding for “better” dogs would continue to be concentrated until the new domesticated species (or subspecies) was formed.
Time to Tame
The creation of a domestic, useful, familiar canid by years of selectively breeding wild and terrifying wolves was almost certainly unplanned. The wolf at the beginning of the process of domestication was tamed—made individually docile—but the essential fact is that, over time, the offspring of those initial wolves were genetically inclined to be more tractable.
Domestication was one of the most brilliant accidents in the entire history of humankind. What’s more, we got it right the first time: Dogs were the original trial animal, and successful product, of such an accident—the happy outcome of years of unwitting experiments and dumb luck.
How long does domestication take? Nobody knows. In an experiment, Russian biologists kept a breeding colony of silver foxes and intentionally selected for breeding those with the least fear and the least aggression toward humans. After 10 generations, 18 percent of the foxes sought human contact and showed little fear. After 30 or so generations, a “domesticated fox” had been created.
The catch is that this experiment was deliberate and strictly controlled. The foxes could not breed with wild foxes and dilute the changing gene pool. Human contact was minimized so animals could not be tamed by their handlers. And because of the experiment’s scientific intent, no one could say, “Oh this one is so cute, let’s let it breed even if it is a little aggressive.” So in the case of dogs, without all these controls, the process could have taken much longer.
Another way of estimating the time at which domestic dogs originated is to consider their genetic differences from wolves. One prominent group of researchers, including Robert Wayne, along with Carles Vilà of the Uppsala University in Sweden and their collaborators, initially estimated in 1997 that dogs diverged from gray wolves 100,000 to 135,000 years ago. After more study, they revised their divergence date to between 40,000 and 100,000 years ago. Another group, led by Peter Savolainen of the Royal Institute of Technology in Sweden, favored the Chinese wolf, a subspecies of the gray wolf, as the probable ancestor and estimated in 2002 that it was domesticated between 15,000 and 40,000 years ago.
How do these genetic estimates stack up against the fossil record? Until 2009, the oldest known remains of domestic dogs were two adult skulls dated to between 13,000 and 17,000 years ago, from Eliseevichi, a region in Russia. Both had the relatively broad, short snout typical of dogs, and both were large, heavy animals, nearly the size of great Danes.
Then a team led by Mietje Germonpré of the Royal Belgian Institute of Natural Sciences reported a stunning new finding in the February 2009 issue of Journal of Archaeological Science: a nearly complete fossil dog skull dated to 31,680 + 250 years ago.
Another Look
Germonpré and her colleagues thought that researchers might have overlooked early prehistoric dogs in the fossil record of the Upper Paleolithic, so they analyzed skulls of large canids (wolves or dogs) from various European sites. The Upper Paleolithic time period spanned 40,000 to 10,000 years ago and is divided into sections based on the artifacts from those times. By convention, each span is named for a culture of people who made the artifacts, and the people, in turn, are usually named for the geographical location where the artifacts were found. The Epigravettian culture existed from 14,000 to 10,000 years ago; before that, the Magdalenian culture thrived from 18,000 to 10,000 years ago; and skipping back a few sections, the Aurignacian culture occurred from 32,000 to 26,000 years ago.
In order to identify the fossil skulls accurately, Germonpré’s team first analyzed a large reference sample of 48 wild, modern wolves and 53 dogs belonging to 11 different breeds. They also examined five skulls (including the ones found in Eliseevichi) that were firmly established as prehistoric domesticated dogs.
In order to establish the morphological differences between wolves and dogs, a group of researchers led by Mietje Germonpré statistically analyzed skulls from 48 modern, wild wolves and 53 modern dogs from 11 breeds, as well as five skulls that were previously established to be from prehistoric dogs. Recent wolves (pink) and prehistoric dogs (blue) clustered into their own groups, based on the length of their toothrows and the shape of their snouts. Modern dogs clustered into four groups, with some overlap in their areas. Recent dogs with archaic proportions included huskies (brown), recent dogs with wolflike snouts included German shepherds (yellow), recent dogs with short toothrows included great Danes (orange), and recent dogs with slender snouts included doberman pinscers (green). One modern dog, a Central Asian shepherd, clustered with the prehistoric dogs. The group then classified new skulls into the established groupings; examples that fell slightly outside of the ranges but that are statistically likely to be within the group are shown as lighter-shaded areas. Recent young wolves fell into the recent-wolf group, whereas wolves kept in captivity were classifed as recent dogs with wolflike snouts. Fossil canid skulls divided between the recent-wolf group and the prehistoric-dog group, with one falling in the group of recent dogs with wolflike snouts. Stephanie Freese, data courtesy of Mietje Germonpré.
The team used statistical analysis of cranial and dental measurements on the skulls to sort the reference sample into six natural clusters. One cluster contained modern wolves. Another consisted of recent dogs of archaic proportions (such as chow-chows and huskies); a single specimen of a Central Asian shepherd was closer to this group than any other but fell outside it. A third cluster included dogs, such as German shepherds and malinois, which have wolflike proportions. These three groups overlapped each other in their cranial proportions. A fourth group of modern dogs has short toothrows—the length of the jaw that contains teeth—and includes such breeds as great Danes, mastiffs and rottweilers. This group overlapped slightly with the archaic-proportioned dog group but not with the others.
The fifth and sixth clusters were completely separate from all others. One consisted of dogs with extremely long, slender snouts, such as Doberman pinschers. The final group, which had long toothrows and short, broad snouts, was made up of the prehistoric dogs. Statistically, the team’s ability to identify any individual specimen as belonging to the correct group was highly significant and accurate.
Using these clusters as reference categories, Germonpré and colleagues used a statistical technique (called discriminant function analysis ) to assign 17 unknown fossil canid skulls to the established categories. Not all of the “unknowns” were truly unknown, however. Five were immature modern wolves that might have had different proportions because of their age, two were wolves that had been kept in captivity, and one was the Central Asian shepherd that didn’t cluster into any of the groups. Additional unknowns were 11 fossil skulls from sites in Belgium, the Ukraine and Russia, although two of these fossil skulls proved to be too incomplete to classify.
The technique correctly classified all of the immature wolves as wolves, but the two zoo wolves were classified as recent dogs with wolflike snouts. Five of the fossil skulls also fell easily into the modern wolf group; although two of these specimens fell into the region of measurements that overlapped with the group of recent dogs with wolflike snouts, they had a higher statistical probability of being wolves. One fossil skull fit directly into the group of recent dogs with wolflike snouts, even though this specimen was clearly ancient.
The remaining three fossil skulls—one from Goyet Cave in Belgium and one each from Mezin and Mezhirich in the Ukraine—resembled each other closely. All three were classified as prehistoric dogs with probabilities of 99 percent, 73 percent and 57 percent, respectively, as was the (modern) Central Asian shepherd, with a 64 percent probability. In addition, the Mezin skull was odd enough in appearance (for a wolf) that another researcher has suggested it might have been a captive wolf. Germonpré and her team were delighted with these results.
The group also successfully extracted mitochondrial DNA (mtDNA) from seven ancient canid bones from Goyet Cave and Trou des Nutons in Belgium. Rather than damage precious skulls, they sampled only bones in which wolves and dogs differ little, so they presumed all of those they sampled for mtDNA were wolves. From each sample, they sequenced a segment of the mtDNA that is highly variable in living wolves and dogs. Each fossil had a unique mtDNA sequence, or haplotype , in this region, which could not be matched with any known sequences for modern wolves (of which there are about 160) or modern dogs (of which more than 1,000 exist) stored in GenBank, a database of all publicly available nucleotide sequences.
“I was not so surprised at the rich genetic diversity of the fossil wolves,” says Germonpré, because there have been other studies with similar findings. Foxes and wolves underwent a severe bottleneck in population size at the end of the last Ice Age, and many genetic lineages went extinct at this time.
“But we were surprised at the antiquity of the Goyet dog,” Germonpré adds. “We expected it would probably be Magdalenian,” perhaps 18,000 to 10,000 years old. This outcome would fit with their results for the Mezin and Mezhirich skulls, which were found with Epigravettian artifacts roughly 14,000 to 10,000 years old. When the age of this specimen from Goyet was directly dated using accelerated mass spectroscopy radiocarbon-dating techniques, the team found that it was not 18,000 years old, but almost twice as old as the next oldest dog, placing the Goyet dog in the Aurignacian period.
A Time of Change
The Goyet dog fossil shows that the domestication of the first animal was roughly contemporaneous with two fascinating developments in Europe.
Around this time, Europeans began producing objects that are recognizable as art. Some of the earliest known art objects from Europe include the remarkable cave paintings of Chauvet Cave in France, the oldest of which were made 32,900 ± 490 years ago. None of the hundreds of glorious Chauvet paintings show wolves. However, the cave preserves something even more haunting: the footprints of a human child about four-and-a-half feet tall, as well as many footprints of large canids and bears.
Around 33,000 years ago, humans began perforating teeth for use in decoration. Although canid teeth made up a very small percentage of the total fauna teeth available, they were used in a majority of the ornaments. Fangs from foxes and wolves appear to have been favorites. One example of a perforated wolf tooth (shown in two views at right) is from Abri Castanet in France and has been dated to 33,000 years ago. A strand of beads interspersed with fox teeth came from the Russian site of Sungir and has been dated to 24,000 years ago (left). There is no specific evidence that canid teeth were used in necklaces; the fox-teeth strand may have been a belt. Randall White
Michel-Alain Garcia of the Centre National de la Recherche Scientifique in Nanterre noticed in 1999 that one track of canid prints appears to accompany the child’s prints. These canid prints, unlike the others, have a shortened middle digit on the front paw: a characteristic of dogs. Garcia suggested that the child and dog might have explored the cave together. Charcoal from a torch the child carried is 26,000 years old.
The Upper Paleolithic cultures of Europe are famous for the flowering of all kinds of exquisite art: sculptures, carvings, paintings and engravings. Animals are common and readily recognizable subjects. Prehistoric art expert Paul Bahn notes that depictions of carnivores, including wolves or dogs, and of humans are rare. Bahn conjectures that portraying wolves and humans might have been taboo.
Anne Pike-Tay of Vassar College offers another perspective. She observes that the scarcity of artistic depictions of carnivores parallels their scarcity in the fossil faunas of the Upper Paleolithic. If domesticated dogs were helping humans hunt, she speculates that they might have been placed in a completely different symbolic category from other animals.
“What if dogs were put in the ‘human family’ category as an extension of the hunter, and like humans, warranted no (or very few) painted or engraved depictions?” she wonders.
The second development of the Aurignacian period is the appearance of objects of personal adornment: jewelry. Although beads and perforated objects occurred much earlier in Africa, the earliest such objects in Europe appeared about 40,000 years ago. At 33,000 years ago, early Aurignacian people began perforating animal teeth (and occasionally human teeth) to wear as pendants or other ornaments, such as belts.
Which teeth did they choose? Among their favorite sources are what have been identified as fangs of foxes and wolves. These identifications might better be termed “small or large canids,” because until now no one has considered the possibility that dogs might have been domesticated so long ago. Besides, identifying a single canid tooth specifically as dog or wolf would be difficult, if not impossible.
Randall White of New York University argues that Aurignacian and later people chose to wear objects that displayed their identity or membership in a certain group or clan. Like gang colors or a t-shirt that proclaims its wearer to be a fan of a particular band, ancient people wore things that made their allegiances clear.
Fossils have helped to establish a far earlier timeframe for dog domestication. A paleolithic canid skull from Goyet in Belgium, about 31,000 years old, has traits characteristic of a dog rather than a wolf (a). When compared to wolves from a similar era, one from Trou Ballu (b) and one from Trou des Nutons (c) in France, the Goyet dog has a relatively wider snout and larger carnassial teeth, and it also has a wider braincase. Elsevier Ltd.
White observes that the teeth Aurignacian people chose to wear were obviously not a random sample of the animals in the fauna. For example, the fauna from the Grotte des Hyènes (Cave of Hyenas) at Brassempouy, France, is dominated by horses, aurochs (a type of cattle) and reindeer—mostly as food remains that often show cutmarks or charring—as well as hyenas, which probably lived in the cave when humans did not. Wolves are rare, making up less than 3 percent of the total fauna. Of approximately 1,600 animal teeth at Brassempouy, only about 2 percent were modified for use as ornaments. However, nearly two-thirds of the ornaments are teeth of wolves or foxes. The rest of the perforated teeth are from other rare species: bear, humans and red deer. None of the teeth of the most common species were used as ornaments at Brassempouy.
Did someone who wore a perforated canid tooth 33,000 years ago proclaim him- or herself to be one of the group that domesticated dogs?
Possibly. Domesticating dogs was a remarkable human achievement that doubtless provided a definite selective advantage to those who accomplished it successfully. They might well have had reason to brag about their accomplishment by wearing canid teeth.
Bibliography
Germonpré, M., et al. 2009. Fossil dogs and wolves from Paleolithic sites in Belgium, the Ukraine and Russia: Osteometry, ancient DNA and stable isotopes. Journal of Archaeological Science 36:473–490.
Morey, D. F. 1994. The early evolution of the domestic dog. American Scientist 82:336–347.
Ostrander, E. A. 2007. Genetics and the shape of dogs. American Scientist 95:406–413.
Savolainen, P., et al. 2002. Genetic evidence for an East Asian origin of domestic dogs. Science 298:1610–1613.
Trut, L. N. 1999. Early canid domestication: The farm-fox experiment. American Scientist 87:160–169.
Vilà, C., et al. 1997. Multiple and ancient origins of the domestic dog. Science 276:1687–1689.
Like many people I had been aware of the hunt for this strange particle, the Higgs boson. Like many people as well, I suspect, I really didn’t comprehend what it was all about.
Then in The Economist print edition of the July 7th the newspaper’s primary story and leader were about the discovery of the Higgs announced on the 4th July. The leader, in particular, was both clear and compelling. I held my breath and asked for permission to republish that leader in Learning from Dogs.
Well the good people from the relevant department at The Economist promptly gave written permission for their leader to be available here for a period of one year. Thanks team!
oooOOOooo
The Higgs boson
Science’s great leap forward
After decades of searching, physicists have solved one of the mysteries of the universe
Jul 7th 2012 | from the print edition
HISTORICAL events recede in importance with every passing decade. Crises, political and financial, can be seen for the blips on the path of progress that they usually are. Even the horrors of war acquire a patina of unreality. The laws of physics, though, are eternal and universal. Elucidating them is one of the triumphs of mankind. And this week has seen just such a triumphant elucidation.
On July 4th physicists working in Geneva at CERN, the world’s biggest particle-physics laboratory, announced that they had found the Higgs boson. Broadly, particle physics is to the universe what DNA is to life: the hidden principle underlying so much else. Like the uncovering of DNA’s structure by Francis Crick and James Watson in 1953, the discovery of the Higgs makes sense of what would otherwise be incomprehensible. Its significance is massive. Literally. Without the Higgs there would be no mass. And without mass, there would be no stars, no planets and no atoms. And certainly no human beings. Indeed, there would be no history. Massless particles are doomed by Einstein’s theory of relativity to travel at the speed of light. That means, for them, that the past, the present and the future are the same thing.
Deus et CERN
Such power to affect the whole universe has led some to dub the Higgs “the God particle”. That, it is not. It does not explain creation itself. But it is nevertheless the most fundamental discovery in physics for decades.
Unlike the structure of DNA, which came as a surprise, the Higgs is a long-expected guest. It was predicted in 1964 by Peter Higgs, a British physicist who was trying to fix a niggle in quantum theory, and independently, in various guises, by five other researchers. And if the Higgs—or something similar—did not exist, then a lot of what physicists think they know about the universe would be wrong.
Physics has two working models of reality. One is Einstein’s general relativity, which deals with space, time and gravity. This is an elegant assembly of interlocking equations that poured out of a single mind a century ago. The other, known as the Standard Model, deals with everything else more messily.
The Standard Model, a product of many minds, incorporates the three fundamental forces that are not gravity (electromagnetism, and the strong and weak nuclear forces), and also a menagerie of apparently indivisible particles: quarks, of which protons and neutrons, and thus atomic nuclei, are made; electrons that orbit those nuclei; and more rarefied beasts such as muons and neutrinos. Without the Higgs, the maths which holds this edifice together would disintegrate.
Finding the Higgs, though, made looking for needles in haystacks seem simple. The discovery eventually came about using the Large Hadron Collider (LHC), a machine at CERN that sends bunches of protons round a ring 27km in circumference, in opposite directions, at close to the speed of light, so that they collide head on. The faster the protons are moving, the more energy they have. When they collide, this energy is converted into other particles (Einstein’s E=mc2), which then decay into yet more particles. What these decay particles are depends on what was created in the original collision, but unfortunately there is no unique pattern that shouts “Higgs!” The search, therefore, has been for small deviations from what would be seen if there were no Higgs. That is one reason it took so long.
Another was that no one knew how much the Higgs would weigh, and therefore how fast the protons needed to be travelling to make it. Finding the Higgs was thus a question of looking at lots of different energy levels, and ruling each out in turn until the seekers found what they were looking for.
Queerer than we can suppose?
For physicists, the Higgs is merely the LHC’s aperitif. They hope the machine will now produce other particles—ones that the Standard Model does not predict, and which might account for some strange stuff called “dark matter”.
Astronomers know dark matter abounds in the universe, but cannot yet explain it. Both theory and observation suggest that “normal” matter (the atom-making particles described by the Standard Model) is only about 4% of the total stuff of creation. Almost three-quarters of the universe is something completely obscure, dubbed “dark energy”. The rest, 22% or so, is matter of some sort, but a sort that can be detected only from its gravity. It forms a giant lattice that permeates space and controls the position of galaxies made of visible matter (see article). It also stops those galaxies spinning themselves apart. Physicists hope that it is the product of one of the post-Standard Model theories they have dreamed up while waiting for the Higgs. Now, they will be able to find out.
For non-physicists, the importance of finding the Higgs belongs to the realm of understanding rather than utility. It adds to the sum of human knowledge—but it may never change lives as DNA or relativity have. Within 40 years, Einstein’s theories paved the way for the Manhattan Project and the scourge of nuclear weapons. The deciphering of DNA has led directly to many of the benefits of modern medicine and agriculture. The last really useful subatomic particle to be discovered, though, was the neutron in 1932. Particles found subsequently are too hard to make, and too short-lived to be useful.
This helps explain why, even at this moment of triumph, particle physics is a fragile endeavour. Gone are the days when physicists, having given politicians the atom bomb, strode confidently around the corridors of power. Today they are supplicants in a world where money is tight. The LHC, sustained by a consortium that was originally European but is now global, cost about $10 billion to build.
That is still a relatively small amount, though, to pay for knowing how things really work, and no form of science reaches deeper into reality than particle physics. As J.B.S. Haldane, a polymathic British scientist, once put it, the universe may be not only queerer than we suppose, but queerer than we can suppose. Yet given the chance, particle physicists will give it a run for its money.
Before signing off on this very important step forward for physics, here are a couple of footnotes.
First, here’s a video of the announcement that was widely shown on the 4th.
Secondly, the BBC News website had a really good piece on the 12th July written by their science correspondent, Quentin Cooper, called Higgs: What was left unsaid.Here’s a flavour taken from the early part of the article,
So that’s it, search over, Higgs boson found. Almost 50 years after physicist Peter Higgs first theorised it was out there, public elementary number one has finally been captured in the data from two detectors at the Large Hadron Collider at Cern. Case closed. Champagne popped. Boson nova danced.
If only. That handily simplified and heavily fictionalised telling of the tale has helped transform a spectacular scientific success story into one that is also global front page news. Without it the 4 July announcement might not have generated such a frenzy of coverage and so many claims about it being a historic milestone for our species. One particle physicist only half jokingly told me that in future the date may come to be celebrated as Higgs Day, rather than anything to do with American independence.
Don’t get me wrong. What has happened at Cern represents a magnificent accomplishment; big science at its biggest and boldest. And it’s fantastic that it has been perceived and received as being of such importance. It’s just that there is more to the story from the very beginning right through to the, probably false, ending.
For starters, as Peter Higgs himself acknowledges, he was just one of several scientists who came up with the mechanism which predicted the particle which bears his name, but the others rarely get a mention*. As to the finish – well, as small children are fond of saying, are we there yet? There is very strong evidence that the LHC teams have found a new elementary particle, but while this is exciting it is far less clear that what they’ve detected is the fabled Higgs. If it is, it seems curiously lighter than expected and more work is needed to explain away the discrepancy. If it’s not, then the experimentalists and theorists are going to be even busier trying to see if it can be shoehorned into the current Standard Model of particle physics. Either way, it’s not exactly conclusive.
Do take the simple step of clicking here and read the BBC piece in full.
Well done, Mr. Peter Higgs and all those very persistent scientists associated with the Large Hadron Collider; I suspect we haven’t heard the last of this!
The Guardian jumps the gun on record June sea ice melt
29 Jun 2012, 11:15 – Verity Payne
The Guardian this week reports that recent rapid melting of Arctic sea ice has seen levels reach a “record low for June”. But it’s premature to be heralding June 2012 as having record low Arctic sea ice extent before the month is even over, particularly as sea ice extent is not currently tracking at record low levels.
The Guardian article says Arctic sea ice “has melted faster this year than ever recorded before”, under the online headline “Arctic sea-ice levels at record low for June”.
This headline could be read in two ways. The first interpretation is that Arctic sea ice extent for the month of June is at a record low. But can we know that before the month is out? The second is that at some point in June Arctic sea ice was at a record low. But does highlighting a few days of sea ice behaviour best illustrate what’s happening to the sea ice?
The piece also appeared in the print version of the Guardian yesterday with the headline “Arctic sea ice has melted faster than ever, say scientists”.
Melt season
The Arctic sea ice is in long-term decline due to man made climate change, but it’s not a uniform decline – sea ice cover changes with the seasons, and the weather in the region affects how far the sea ice extends, particularly as it melts towards the ice minimum in late September.
During melt season, Arctic sea ice seems to get a lot of media attention, often with rather confusing results. This Guardian article was prompted by analysis from the US National Snow and Ice Data Center (NSIDC), who provide daily updates and regular analysis of Arctic sea ice conditions.
The mention of that Guardian Newspaper article is worth clicking through to, if only to enjoy the fabulous photograph, as below:
Scientists say Arctic sea ice has plummeted to its lowest levels ever this year. Photgraph: Steven J Kazlowski/Alamy
Back to that embedded link in the Carbon Brief posting to the US National Snow and Ice Data Center. It reveals a wealth of important information. Try this …
Rapid sea ice retreat in June
Arctic sea ice extent declined quickly in June, setting record daily lows for a brief period in the middle of the month. Strong ice loss in the Kara, Bering, and Beaufort seas, and Hudson and Baffin bays, led the overall retreat. Northern Hemisphere snow extent was unusually low in May and June, continuing a pattern of rapid spring snow melt seen in the past six years.
Overview of conditions
Arctic sea ice extent for June 2012 averaged 10.97 million square kilometers (4.24 million square miles). This was 1.18 million square kilometers (456,000 square miles) below the 1979 to 2000 average extent. The last three Junes (2010-2012) are the three lowest in the satellite record. June 2012 ice extent was 140,000 square kilometers (54,000 square miles) above the 2010 record low. Ice losses were notable in the Kara Sea, and in the Beaufort Sea, where a large polynya has formed. Retreat of ice in the Hudson and Baffin bays also contributed to the low June 2012 extent. The only area of the Arctic where sea ice extent is currently above average is along the eastern Greenland coast.
Get your mind around this image that comes from the latest NSIDC report.
Arctic sea ice extent for June 2012 was 10.97 million square kilometers (4.24 million square miles). The magenta line shows the 1979 to 2000 median extent for that month. The black cross indicates the geographic North Pole. Sea Ice Index data. About the data
That old saying that I opened with, the one about There are those that do, etc.
No question in my mind that firmly in the camp of those that do is Mother Nature! Anyone prepared?
Learning from Dogs 