Tag: Stanford University

Deep brain stimulation for Parkinson’s sufferers.

Smart brain-zapping implants.

I was just catching up on emails and saw this item from Nature.

I do not have the permission to share the whole article with you but feel that it is alright to share these two paragraphs:

Keith Krehbiel lived with Parkinson’s disease for nearly 25 years before agreeing to try a brain implant that might alleviate his symptoms. He had long been reluctant to submit to the surgery. “It was a big move,” he says. But by 2020, his symptoms had become so severe that he grudgingly agreed to go ahead.

Deep-brain stimulation involves inserting thin wires through two small holes in the skull into a region of the brain associated with movement. The hope is that by delivering electrical pulses to the region, the implant can normalize aberrant brain activity and reduce symptoms. Since the devices were first approved almost three decades ago, some 200,000 people have had them fitted to help calm the tremors and rigidity caused by Parkinson’s disease. But about 40,000 of those who received devices made after 2020 got them with a special feature that has largely not yet been turned on. The devices can read brain waves and then adapt and tailor the rhythm of their output, in much the same way as a pacemaker monitors and corrects the heart’s electrical rhythms, says Helen Bronte-Stewart, a neurologist at Stanford University in California.

I am going to try and contact Helen at Stanford University to gather more details and, hopefully, to obtain her permission to share the complete article with you.

Detecting fakes

Another good article from The Conversation.

I make no apologies for returning to the subject of scams and fakes. Because the advances in the equipment we have for viewing the internet are growing appreciably, and quickly.

We should include scams in this topic. Just a couple of days ago I had a text on my cell-phone that purported to have come from the United States Post Office, the USPS, and at first I was taken in. Luckily I left it for a while and then discovered it was a scam.

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No, you’re not that good at detecting fake videos − 2 misinformation experts explain why and how you can develop the power to resist these deceptions

By

  1. Sam Wineburg Professor of Education and (by courtesy) History, Stanford University
  2. Michael Caulfield Research Scientist, Center for an Informed Public, University of Washington
Are you sure you know what that emotionally jarring video clip really shows?
F.J. Jimenez/Moment via Getty Images

Sam Wineburg, Stanford University and Michael Caulfield, University of Washington

Someone tracking the conflict raging in the Middle East could have seen the following two videos on social media. The first shows a little boy hovering over his father’s dead body, whimpering in Arabic, “Don’t leave me.” The second purports to show a pregnant woman with her stomach slashed open and claims to document the testimony of a paramedic who handled victims’ bodies after Hamas’ attack in Israel on Oct. 7, 2023.

Even though these videos come from different sides of the Israel-Hamas war, what they share far exceeds what separates them. Because both videos, though real, have nothing to do with the events they claim to represent. The clip of the boy is from Syria in 2016; the one of the woman is from Mexico in 2018.

Cheap but effective fakes

Recent headlines warn of sophisticated, AI-driven deepfakes. But it is low-tech cheap fakes like these that fuel the latest round of disinformation. Cheap fakes are the Swiss army knife in the propagandist’s tool belt. Changing a date, altering a location or even repurposing a clip from a video game and passing it off as battlefield combat require little know-how yet effectively sow confusion.

The Israel-Hamas war has unleashed a flood of fake videos on social media.

The good news is that you can avoid being taken in by these ruses – not by examining the evidence closely, which is liable to mislead you, but by waiting until trusted sources verify what you’re looking at. This is often hard to do, however.

Most people are ill-equipped to detect this kind of trickery. Research that we review in our new book, “Verified: How to Think Straight, Get Duped Less, and Make Better Decisions about What to Believe Online,” shows that almost everyone falls for it.

In the largest survey of its kind, 3,446 high school students evaluated a video on social media that purported to show election fraud in the 2016 Democratic primary. Students could view the whole video, part of it or leave the footage to search the internet for information about it. Typing a few keywords into their browsers would have led students to articles from Snopes and the BBC debunking the video. Only three students – less than one-tenth of 1% – located the true source of the video, which had, in fact, been shot in Russia.

Your lying eyes

Why were students so consistently duped? The problem, we’ve found, is that many people, young and old alike, think they can look at something online and tell what it is. You don’t realize how easily your eyes can be deceived – especially by footage that triggers your emotions.

When an incendiary video dodges your prefrontal cortex and lands in your solar plexus, the first impulse is to share your outrage with others. What’s a better course of action? You might assume that it is to ask whether the clip is true or false. But a different question – rather, a set of related questions – is a better starting place.

  • Do you really know what you’re looking at?
  • Can you really tell whether the footage is from atrocities committed by Russian forces in the Donbas just because the headline blares it and you’re sympathetic to the Ukrainian cause?
  • Is the person who posted the footage an established reporter, someone who risks their status and prestige if it turns out to be fake, or some random person?
  • Is there a link to a longer video – the shorter the clip, the more you should be wary – or does it claim to speak for itself, even though the headline and caption leave little room for how to connect the dots?

These questions require no advanced knowledge of video forensics. They require you only to be honest with yourself. Your inability to answer these questions should be enough to make you realize that, no, you don’t really know what you’re looking at.

Patience is a powerful tool

Social media reports of “late-breaking news” are not likely to be reporting at all, but they are often pushed by rage merchants wrapping an interpretation around a YouTube video accompanied by lightning bolt emojis and strings of exclamation points. Reliable reporters need time to establish what happened. Rage merchants don’t. The con artist and the propagandist feed on the impatient. Your greatest information literacy superpower is learning to wait.

If there are legs to the video, rest assured you’re not the only one viewing it. There are many people, some of whom have mastered advanced techniques of video analysis, who are likely already analyzing it and trying to get to the bottom of it.

You won’t have to wait long to learn what they’ve found.

Sam Wineburg, Professor of Education and (by courtesy) History, Stanford University and Michael Caulfield, Research Scientist, Center for an Informed Public, University of Washington

This article is republished from The Conversation under a Creative Commons license. Read the original article.

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I hope you found this of interest. We live in many ways in a really strange world; I am talking about the digital world, of course.

The tracks we leave.

We will be forever known by the tracks we leave.

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The power of the truth.

When I saw that proverb I was deeply affected. Hence me taking the photograph.

It was seen etched onto a glass panel that was part of the otter enclosure at our nearby Wildlife Images Rehabilitation and Education Center, just a few miles from where we live in Merlin, OR.

Here’s why I was so affected.

My draft book of the same name as this blog is slowly coming together and I’m at the 30,000-word mark. A while ago, John Hurlburt, a good friend of this blog, was chatting to me and he spoke about the “interconnectedness of all conscious life”. It immediately appealed to me as a chapter in the book.

But while it was obvious to me that all conscious life is connected, for some time I struggled to achieve any clarity about what I wanted to write. Seeing that proverb kicked off the journey towards clarity.

Thus, today, I wanted to share the steps of that journey so far.

Over on the Skeptical Science blogsite there is a post, dated 15th April, 2010, with the title of Earth’s five mass extinction events. The author, John Cook, opens:

As climate changes, a major question is whether nature can adapt to the changing conditions? The answer lies in the past. Throughout Earth’s history, there have been periods where climate changed dramatically. The response was mass extinction events, when many species went extinct followed by a very slow recovery. The history of coral reefs gives us an insight into the nature of these events as reefs are so enduring and the fossil record of corals is relatively well known (Veron 2008). What we find is reefs were particularly impacted in mass extinctions, taking many millions of years to recover. These intervals are known as “reef gaps”.

Figure 1: Timeline of mass extinction events. The five named vertical bars indicate mass extinction events. Black rectangles (drawn to scale) represent global reef gaps and brick-pattern shapes show times of prolific reef growth (Veron 2008).
Figure 1: Timeline of mass extinction events. The five named vertical bars indicate mass extinction events. Black rectangles (drawn to scale) represent global reef gaps and brick-pattern shapes show times of prolific reef growth (Veron 2008).

So what, one might ask?

Well, forget about millions of years ago. Just 12 days ago, there was a news item released by Stanford University. It read in full:

July 24, 2014

Stanford biologist warns of early stages of Earth’s 6th mass extinction event

Stanford Biology Professor Rodolfo Dirzo and his colleagues warn that this “defaunation” could have harmful downstream effects on human health.

The planet’s current biodiversity, the product of 3.5 billion years of evolutionary trial and error, is the highest in the history of life. But it may be reaching a tipping point.

In a new review of scientific literature and analysis of data published in Science, an international team of scientists cautions that the loss and decline of animals is contributing to what

Elephants and other large animals face an increased risk of extinction in what Stanford Biology Professor Rodolfo Dirzo terms "defaunation." (Claudia Paulussen/Shutterstock)
Elephants and other large animals face an increased risk of extinction in what Stanford Biology Professor Rodolfo Dirzo terms “defaunation.” (Claudia Paulussen/Shutterstock)

appears to be the early days of the planet’s sixth mass biological extinction event.

Since 1500, more than 320 terrestrial vertebrates have become extinct. Populations of the remaining species show a 25 percent average decline in abundance. The situation is similarly dire for invertebrate animal life.

And while previous extinctions have been driven by natural planetary transformations or catastrophic asteroid strikes, the current die-off can be associated to human activity, a situation that the lead author Rodolfo Dirzo, a professor of biology at Stanford, designates an era of “Anthropocene defaunation.”

Across vertebrates, 16 to 33 percent of all species are estimated to be globally threatened or endangered. Large animals – described as megafauna and including elephants, rhinoceroses, polar bears and countless other species worldwide – face the highest rate of decline, a trend that matches previous extinction events.

Larger animals tend to have lower population growth rates and produce fewer offspring. They need larger habitat areas to maintain viable populations. Their size and meat mass make them easier and more attractive hunting targets for humans.

Although these species represent a relatively low percentage of the animals at risk, their loss would have trickle-down effects that could shake the stability of other species and, in some cases, even human health.

For instance, previous experiments conducted in Kenya have isolated patches of land from megafauna such as zebras, giraffes and elephants, and observed how an ecosystem reacts to the removal of its largest species. Rather quickly, these areas become overwhelmed with rodents. Grass and shrubs increase and the rate of soil compaction decreases. Seeds and shelter become more easily available, and the risk of predation drops.

Consequently, the number of rodents doubles – and so does the abundance of the disease-carrying ectoparasites that they harbor.

“Where human density is high, you get high rates of defaunation, high incidence of rodents, and thus high levels of pathogens, which increases the risks of disease transmission,” said Dirzo, who is also a senior fellow at the Stanford Woods Institute for the Environment. “Who would have thought that just defaunation would have all these dramatic consequences? But it can be a vicious circle.”

The scientists also detailed a troubling trend in invertebrate defaunation. Human population has doubled in the past 35 years; in the same period, the number of invertebrate animals – such as beetles, butterflies, spiders and worms – has decreased by 45 percent.

As with larger animals, the loss is driven primarily by loss of habitat and global climate disruption, and could have trickle-up effects in our everyday lives.

For instance, insects pollinate roughly 75 percent of the world’s food crops, an estimated 10 percent of the economic value of the world’s food supply. Insects also play a critical role in nutrient cycling and decomposing organic materials, which helps ensure ecosystem productivity. In the United States alone, the value of pest control by native predators is estimated at $4.5 billion annually.

Dirzo said that the solutions are complicated. Immediately reducing rates of habitat change and overexploitation would help, but these approaches need to be tailored to individual regions and situations. He said he hopes that raising awareness of the ongoing mass extinction – and not just of large, charismatic species – and its associated consequences will help spur change.

“We tend to think about extinction as loss of a species from the face of Earth, and that’s very important, but there’s a loss of critical ecosystem functioning in which animals play a central role that we need to pay attention to as well,” Dirzo said. “Ironically, we have long considered that defaunation is a cryptic phenomenon, but I think we will end up with a situation that is non-cryptic because of the increasingly obvious consequences to the planet and to human wellbeing.”

The coauthors on the report include Hillary S. Young, University of California, Santa Barbara; Mauro Galetti, Universidade Estadual Paulista in Brazil; Gerardo Ceballos, Universidad Nacional Autonoma de Mexico; Nick J.B. Isaac, of the Natural Environment Research Council Centre for Ecology and Hydrology in England; and Ben Collen, of University College London.

For more Stanford experts on ecology and other topics, visit Stanford Experts.

It hardly requires any imagination to realise that what we humans need in order to live, air, food, and clean water, is utterly dependant on us humans caring for the planet that sustains us.  It’s all too easy just to take for granted that we will always have air, food and clean water. Now go back and read that last sentence from Professor Dirzo. [my emphasis]

We tend to think about extinction as loss of a species from the face of Earth, and that’s very important, but there’s a loss of critical ecosystem functioning in which animals play a central role that we need to pay attention to as well. Ironically, we have long considered that defaunation is a cryptic phenomenon, but I think we will end up with a situation that is non-cryptic because of the increasingly obvious consequences to the planet and to human wellbeing.

The tracks we leave! H’mmm.

Let me move on in my journey.

Over on the EarthSky blogsite there was an item about the mysterious giant crater that appeared suddenly in Siberia.

Mystery crater in Yamal peninsula probably caused by methane release

Thawing permafrost likely allowed methane gas to be released, creating the large hole in permafrost found in northern Russia, says the Russian team that investigated it.

UPDATE July 31, 2014.

Stories are popping up fast in various media this afternoon about a likely source of a reported, mysterious hole in permafrost in the Yamal region of northern Russia. This hole was

The first mysterious crater spotted by helicopter in the Yamal region of northern Russia. Image via Nature.
The first mysterious crater spotted by helicopter in the Yamal region of northern Russia. Image via Nature.

spotted by a helicopter pilot in mid-July; reindeer herders reported a second hole some days later. Eric Holthaus of Slate said that there is now:

… new (and definitive) evidence … that the Siberian holes were created via methane released from warming permafrost.

The evidence has come via the journal Nature, which published a story on its website today (July 31) featuring the findings of Andrei Plekhanov, a senior researcher at the Scientific Centre of Arctic Studies in Salekhard, Russia, and his team. This is the team that was sent in to investigate the first hole shortly after it was found. Holthaus said:

That team measured methane concentrations up to 50,000 times standard levels inside the crater.

The story in Nature said:

Air near the bottom of the crater contained unusually high concentrations of methane — up to 9.6% — in tests conducted at the site on 16 July … Plekhanov, who led an expedition to the crater, says that air normally contains just 0.000179% methane …

Plekhanov and his team believe that it is linked to the abnormally hot Yamal summers of 2012 and 2013, which were warmer than usual by an average of about 5°C. As temperatures rose, the researchers suggest, permafrost thawed and collapsed, releasing methane that had been trapped in the icy ground.

Holthaus pointed out:

Last week, the New York Times’ Andrew Revkin interviewed a Russian scientist who had also visited the hole and came to similar conclusions.

This newly reported evidence, just coming to light today, seems particularly scary given the story earlier this week about what the University of Stockholm called “vast methane plumes” found by scientists aboard the icebreaker Oden, which is now exploring and measuring methane release from the floor of the Arctic Ocean.

Build-up and release of gas from thawing permafrost most probable explanation, says Russian team.

My last step in the journey about our interconnectedness involves water.

The Permaculture Research Institute published on the 31st July a Water Resources Fact Sheet. Here’s a taste (sorry!) of what was written:

Water scarcity may be the most underrated resource issue the world is facing today.
Water scarcity may be the most underrated resource issue the world is facing today.

Seventy percent of world water use is for irrigation.

Each day we drink nearly 4 liters of water, but it takes some 2,000 liters of water — 500 times as much — to produce the food we consume.

1,000 tons of water is used to produce 1 ton of grain.

Between 1950 and 2000, the world’s irrigated area tripled to roughly 700 million acres. After several decades of rapid increase, however, the growth has slowed dramatically, expanding only 9 percent from 2000 to 2009. Given that governments are much more likely to report increases than decreases, the recent net growth may be even smaller.

The dramatic loss of momentum in irrigation expansion coupled with the depletion of underground water resources suggests that peak water may now be on our doorstep.

Today some 18 countries, containing half the world’s people, are overpumping their aquifers. Among these are the big three grain producers — China, India, and the United States.

Saudi Arabia is the first country to publicly predict how aquifer depletion will reduce its grain harvest. It will soon be totally dependent on imports from the world market or overseas farming projects for its grain.

While falling water tables are largely hidden, rivers that run dry or are reduced to a trickle before reaching the sea are highly visible. Among this group that has limited outflow during at least part of the year are the Colorado, the major river in the southwestern United States; the Yellow, the largest river in northern China; the Nile, the lifeline of Egypt; the Indus, which supplies most of Pakistan’s irrigation water; and the Ganges in India’s densely populated Gangetic basin.

(The rest of this important article including the many useful links may be read here.)

Now, despite the despondent theme of the contents of this post, I am not beating a ‘doom and gloom’ drum. What I am trying to point out is that we are all interconnected.  Not just all of mankind but all conscious life.  Ergo, the destruction of natural habitats, the loss of every species, even the unwarranted killing of a wild animal is, in a very real and tangible way, the destruction of our habitat, the loss of our species and the unwarranted killing of future generations of homo sapiens.

It seems that whichever way we look the interconnectedness of all conscious life is staring us full in the face.  The utter madness of mankind’s group blindness is beyond comprehension.

It takes an ancient proverb from a people that lived in harmony with the planet to speak the truth. We ignore it at our peril.

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Immediate concern? Try this!

Talk about extreme ends of the spectrum!

Yesterday, I posted about the prediction that in four billion years the Milky Way galaxy would collide with the Andromeda galaxy.  I called the post Not of immediate concern.

Today, I am writing about something that is of immediate concern. That is if you regard the next couple of decades as ‘immediate’.

The post is prompted by an item that was published on the BBC News website two days ago.  It carried the title Climate inaction catastrophic – US

Climate inaction catastrophic – US

By Matt McGrath
Environment correspondent, BBC News, Yokohama, Japan

The costs of inaction on climate change will be “catastrophic”, according to US Secretary of State John Kerry.

Mr Kerry was responding to a major report by the UN which described the impacts of global warming as “severe, pervasive and irreversible”.

He said dramatic and swift action was required to tackle the threats posed by a rapidly changing climate.

Our health, homes, food and safety are all likely to be threatened by rising temperatures, the report says.

Scientists and officials meeting in Japan say the document is the most comprehensive assessment to date of the impacts of climate change on the world.

In a statement, Mr Kerry said: “Unless we act dramatically and quickly, science tells us our climate and our way of life are literally in jeopardy. Denial of the science is malpractice. There are those who say we can’t afford to act. But waiting is truly unaffordable. The costs of inaction are catastrophic.”

Putting to one side the mild irony of a representative of the US Government wringing his hands about what mankind is doing to our climate, the report is valuable and potentially significant.

The report was from the Intergovernmental Panel on Climate Change (IPCC) which is, as their website explains:

The Intergovernmental Panel on Climate Change (IPCC) was established by the United Nations Environmental Programme (UNEP) and the World Meteorological Organization (WMO) in 1988 to assess the scientific, technical and socio-economic information relevant for the understanding of human induced climate change, its potential impacts and options for mitigation and adaptation.

Watch this 5-minute video of Stanford professor Dr. Chris Field, co-chair of that IPCC working group, addressing some of the key questions raised by this latest report.  In particular, focus on Dr. Field discussing the potential of the loss of the Greenland ice cap around 3 min 30 seconds.

Back to the BBC report (which you should read in full!).  Back to Dr. Chris Field being quoted as saying:

I think the really big breakthrough in this report is the new idea of thinking about managing climate change as a problem in managing risks. Climate change is really important but we have a lot of the tools for dealing effectively with it – we just need to be smart about it.

BBC climate-change-impacts_v2

It would be easy to get into the mindset that humanity is not going to change its ways in time.

But, then again, the pace of growing awareness about what the changes are that we all need to make, and make relatively soon, is dramatic.

Maybe, just maybe, this will turn out alright!

Fingers-crossed1

For all the young people in the world, I do so hope!

 

Looking at stress from a different perspective

Who doesn’t get stressed out!  Maybe not such an issue?

I have in my bookshelf a book called The Anxiety Epidemic.  On the back cover it explains this:

The Pain & Stress Center was founded in 1979, but the dream started long before that.  The goal is to help individuals realize their true potential and to support and conduct research in the areas of man’s greatest needs – natural alternatives.

I had seen the book in a second-hand bookshop and paid $1.99 for it!

Clearly I have some interest in the topic and like many others around me know that certain situations cause me stress.

Thus when recently there was a TED talk on the topic of ‘How to make stress your friend’ it seemed like a worthwhile thing to watch.  I was not wrong!

Published on Sep 4, 2013

Stress. It makes your heart pound, your breathing quicken and your forehead sweat. But while stress has been made into a public health enemy, new research suggests that stress may only be bad for you if you believe that to be the case. Psychologist Kelly McGonigal urges us to see stress as a positive, and introduces us to an unsung mechanism for stress reduction: reaching out to others.

It was an easy matter to find Kelly McGonigal’s website and discover a mine of advice and other good stuff.  For example, this:

Watch: How to Think Like a Psychologist

My fall 2011 Stanford University course “How to Think Like a Psychologist” is now available as a series of free, downloadable videos through iTunes university.

In this fun course, I invited my favorite psychology and neuroscience researchers at Stanford to talk about their work and what it means for everyday life and real-world problems. Each class starts with a 45-min lecture by the guest speaker, followed by about 30 minutes of Q&A from myself and course participants. I had a great time grilling these amazing scientists about everything from politics to education, parenting, shopping, and the scientific process. You’ll even hear a few personal stories they’ve never shared in public before!

Then there was this:

Learn: Mindfulness of Breathing.

I’m frequently asked questions about how to get started meditating, what is the best meditation for beginners, what is the best meditation for reducing stress (or training willpower, or cultivating self-compassion, or developing focus, etc.). Below is my favorite meditation for all these intentions.

You can listen to (or download) a version of these instructions and a 15-min guided practice here.

Mindfulness of Breathing

The intention of this practice is to turn your attention to the breath, notice when the mind wanders, and bring your attention back to the breath.

This meditation cultivates self-awareness, mindfulness, and the ability to make conscious choices about what you are doing. It also is good practice in not following every impulse or habit.

There are a few different ways to focus on the breath; choose the one that feels right to you.

There’s more to read here.

Of course, I couldn’t sign off without offering yet another thing to learn from dogs- relaxation.

Cleo dealing with stress!
Cleo dealing with stress!

So have a great week ahead: With or without stress!

The wind doth blow!

Maybe even blowing trucks over!

OK, that sub-heading must seem a tad bizarre!  Let me explain.  On Tuesday, Jean had an important visit to make down in Mesa, AZ on the outskirts of Phoenix.  The first 65 miles, give or take, from Payson to Mesa are down along Highway 87.

At 11.20 we started on our return from Mesa planning on being early back home, say by 1pm at the latest.  But 31 miles up the Northbound carriageway of Highway 87, we came to a halt.  The road was closed due to an accident with a tanker.  As our local newspaper, the Payson Roundup, put it,

The driver of the truck was taken by ambulance to a Scottsdale hospital with non life-threatening injuries. DPS has not ruled out speed as the cause of the crash. Photo by Andy Towle.

Due to a hazardous spill, Highway 87 was closed most of Tuesday, but reopened Wednesday morning after overnight clean up efforts, according to the Arizona Department of Public Safety.

Officials initially thought the roadway could be closed as many as two days due to the amount of oil spewed across both sides of the highway.

The highway closed down after a semi truck carrying oil used for paving rolled Tuesday afternoon near milepost 228, at the bottom of Slate Creek.

That resulted in us having to take a 170 mile detour and not arriving back until 4.30pm!

So what’s that got to do with the post for today?  Simply that the implications of Tuesday spilled, like the tanker’s oil cargo, across into Wednesday and the long, thoughtful post I had in my mind to write got put on hold.  Thus in its place is this republication of a recent release by Stanford School of Engineering at Stanford University.  Apologies for another republished item but the article is relevant and interesting.

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WIND COULD MEET WORLD’S TOTAL POWER DEMAND – AND THEN SOME – BY 2030

Wind turbines near Livermore, CA.

HIGH RESOLUTION MODELS

In their study, Jacobson and Archer adapted the three-dimensional, atmosphere-ocean-land computer model known as GATOR-GCMOM to calculate the theoretical maximum wind power potential on the planet taking into account wind reduction by turbines. Their model assumed wind turbines could be installed anywhere and everywhere, without regard to societal, environmental, climatic or economic considerations.

The new paper contradicts two earlier studies that said wind potential falls far short of the aggressive goal because each turbine steals too much wind energy from other turbines, and that turbines introduce harmful climate consequences that would negate some of the positive aspects of renewable wind energy.

The new model provides a more sophisticated look than previously possible by separating winds in the atmosphere into hypothetical boxes stacked atop and beside one another. Each box has its own wind speed and weather. In their model, Jacobson and Archer exposed individual turbines to winds from several boxes at once, a degree of resolution earlier global models did not match.

“Modeling the climate consequences of wind turbines is complex science,” said Jacobson. “This software allows that level of detail for the first time.”

With a single model, the researchers were able to calculate the exposure of each wind turbine in the model to winds that vary in space and time. Additionally, the model extracts the correct amount of energy from the wind that gets claimed by the turbines, reducing the wind speed accordingly while conserving energy. It then calculates the effect of these wind speed changes on global temperatures, moisture, clouds and climate.

POTENTIAL APLENTY

Among the most promising things the researchers learned is that there is a lot of potential in the wind—hundreds of terawatts. At some point, however, the return on building new turbines plateaus, reaching a level in which no additional energy can be extracted even with the installation of more turbines.

“Each turbine reduces the amount of energy available for others,” Archer said. The reduction, however, becomes significant only when large numbers of turbines are installed, many more than would ever be needed.

“And that’s the point that was very important for us to find,” Archer said.

The researchers have dubbed this point the saturation wind power potential. The saturation potential, they say, is more than 250 terawatts if we could place an army of 100-meter-tall wind turbines across the entire land and water of planet Earth. Alternatively, if we place them only on land (minus Antarctica) and along the coastal ocean there is still some 80 terawatts available—about seven times the total power demand of all civilization. Hypothetical turbines operating in the jet streams six miles up in the atmosphere could extract as much as an additional 380 terawatts.

“We’re not saying, ‘Put turbines everywhere,’ but we have shown that there is no fundamental barrier to obtaining half or even several times the world’s all-purpose power from wind by 2030. The potential is there, if we can build enough turbines,” said Jacobson.

Mark Z. Jacobson, professor of civil and environmental engineering. Photo: Linda Cicero / Stanford News Service

HOW MANY TURBINES?

Knowing that the potential exists, the researchers turned their attention to how many turbines would be needed to meet half the world’s power demand—about 5.75 terawatts—in a 2030 clean-energy economy. To get there, they explored various scenarios of what they call the fixed wind power potential—the maximum power that can be extracted using a specific number of wind turbines.

Archer and Jacobson showed that four million 5-megawatt turbines operating at a height of 100 meters could supply as much 7.5 terawatts of power—well more than half the world’s all-purpose power demand—without significant negative affect on the climate.

“We have a long way to go. Today, we have installed a little over one percent of the wind power needed,” said Jacobson.

In terms of surface area, Jacobson and Archer would site half the four million turbines over water. The remaining two million would require a little more than one-half of one percent of the Earth’s land surface—about half the area of the State of Alaska. However, virtually none of this area would be used solely for wind, but could serve dual purposes as open space, farmland, ranchland, or wildlife preserve.

Rather than put all the turbines in a single location, Archer and Jacobson say it is best and most efficient to spread out wind farms in high-wind sites across the globe—the Gobi Desert, the American plains and the Sahara for example.

“The careful siting of wind farms will minimize costs and the overall impacts of a global wind infrastructure on the environment,” said Jacobson. “Regardless, as these results suggest, the saturation of wind power availability will not limit a clean-energy economy.”

Funding sources include National Science Foundation, U.S. Environmental Protection Agency, and National Aeronautics and Space Administration high-end computing.

Andrew Myers is associate director of communications for the Stanford University School of Engineering.

Monday, September 10, 2012

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Let me close by pointing you to Mark Jacobson’s website.

Autism and bees – a disturbing link

If you eat food, and hope to do so in the future, read this!

I subscribe to Food Freedom News and often read their articles when they appear in my ‘in-box’.  Especially so yesterday morning when the headline jumped off the ‘page’ at me: Autism and Disappearing Bees: A Common Denominator?

So, in a sense, hand-in-hand with the article in yesterday’s Learning from Dogs Food, glorious food!  Because if trying to feed 9 billion people living on a planet where ‘farmers holding seeds that won’t sprout‘ means the even greater use of chemicals then ….. then, I don’t know what!

The Food Freedom website showed that the article came from Brian Moench of the Common Dreams website.  Not a website I had come across before but one that quickly impressed me!

So here’s that article.

Autism and Disappearing Bees: A Common Denominator?

by Brian Moench

A few days ago the Salt Lake Tribune’s front page headline declared, “Highest rate in the nation, 1 in 32 Utah boys has autism.”  This is a national public health emergency, whose epicenter is Utah, Gov. Herbert.  A more obscure story on the same day read: “New pesticides linked to bee population collapse.”  If you eat food, and hope to do so in the future, this is another national emergency, Pres. Obama.  A common  denominator may underlie both headlines.

A honeybee pollinates a flower in a citrus grove just coming into blossom. (Photograph: David Silverman/Getty Images)

A Stanford University study with 192 pairs of twins, with one twin autistic and one not, found that genetics accounts for 38% of the risk of autism, and environmental factors account for  62%.

Supporting an environmental/genetic tag team are other studies showing autistic children and their mothers have a high rate of a genetic deficiency in the production of glutathione,  an anti-oxidant and the body’s primary means of detoxifying heavy metals.  High levels of toxic metals in children are strongly correlated with the severity of autism.  Low levels of glutathione, coupled with high production of another chemical, homocysteine, increase the chance of a mother having an autistic child to one in three.  That autism is four times more common among boys than girls is likely related to a defect in the single male X chromosome contributing to anti-oxidant deficiency.   There is no such thing as a genetic disease epidemic  because genes don’t change that quickly.  So the alarming rise in autism must be the result of increased environmental exposures that exploit these genetic defects.

During the critical first three months of gestation a human embryo adds 250,000 brain cells per minute reaching 200 billion by the fifth month.  There is no chemical elixir that improves this biologic miracle, but thousands of toxic substances can cross the placenta and impair that process, leaving brain cells stressed, inflamed, less well developed, fewer in number and with fewer connections with each other all of which diminish brain function.  The opportunity to repair the resulting deficits later on is limited.

The list of autism’s environmental suspects is long and comes from many studies that show higher rates of autism with greater exposure to flame retardants, plasticizers like BPA,  pesticides, endocrine disruptors in personal care products, heavy metals in air pollution, mercury, and pharmaceuticals like anti-depressants.  [my emphasis]  (Utah’s highest in the nation autism rates are matched by the highest rates of anti-depressant use and the highest mercury levels in the country in the Great Salt Lake).

Doctors have long advised women during pregnancy to avoid any unnecessary consumption of drugs or chemicals.  But as participants in modern society we are all now exposed to over 83,000 chemicals from the food we eat, the water we drink, the air we breathe and the consumer products we use.  Pregnant women and their children have 100 times more chemical exposures today than 50 years ago.  The average newborn has over 200 different chemicals and heavy metals contaminating  its blood when it takes its first breath. 158 of them are toxic to the brain.  Little wonder that rates of autism, attention deficit and behavioral disorders are all on the rise.

How does this relate to vanishing bees and our food supply?  Two new studies, published simultaneously in the journal Science,  show that the rapid rise in use of insecticides is likely responsible for the mass disappearance of bee populations.   The world’s food chain hangs in the balance because 90% of native plants require pollinators to survive.

The brain of insects is the intended target of these insecticides.  They disrupt the bees homing behavior and their ability to return to the hive, kind of like “bee autism.”   But insects are different than humans, right?   Human and insect nerve cells share the same basic biologic infrastructure.  Chemicals that interrupt electrical impulses in insect nerves will do the same to humans.  But humans are much bigger than insects and the doses to humans are  miniscule, right?

During critical first trimester development a human is no bigger than an insect so there is every reason to believe that pesticides could wreak havoc with the developing brain of a human embryo.   But human embryos aren’t out in corn fields being sprayed with insecticides, are they?  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.

The autism epidemic and disappearing bees are real public health emergencies created by allowing our world to be overwhelmed by environmental toxins.  Environmental protection is human protection, especially for the smallest and most vulnerable among us.

oooOOOooo

Brian Moench

Dr. Brian Moench is President of Utah Physicians for a Healthy Environment and a member of the Union of Concerned Scientists. He can be reached at: drmoench@yahoo.com

Please bring this to the notice of any couples who you know are planning for a family!

If all this sort of information makes you want to curl up and kiss your backside goodnight, then hold on.  Next week I hope to publish a summary of a fascinating presentation given to a local women’s group here in Payson that shows the many obvious and easy steps we can all take to revert back to a resilient life on this planet.  

Dogs really do know better!

The power of love

Your task is not to seek for love, but merely to seek and find all the barriers within yourself that you have built against it. Jala ad-Din Rumi 1207 – 1273

One would suspect that readers of this Post title would have many different responses to the word ‘love’.  Perhaps in this harsh, economically challenged world, it seems a little quaint to think about love in anything other than a romantic sense.

But, trust me, there’s nothing quaint or ‘away with the fairies’ about reminding us all of both the power of love and the urgent need to bring that power further up the scale of human consciousness.  Let’s even try and aim for where dogs are.  Dogs intuitively demonstrate unconditional love to those around them that they trust.

 

Dog love!

 

Before we look at the effects of love, let’s remind ourselves of some of the outcomes from the stress and trauma generated by present times.  A news item from the London School of Hygiene and Tropical Medicine published in July, 2009, said this:

Researchers at London School of Hygiene & Tropical Medicine and Oxford University estimated that soaring stress brought on by job losses could prompt a 2.4% rise in suicide rates in people under-64 years of age, a 2.7% rise in heart attack deaths in men between 30 and 44 years, and a 2.4% rise in homicides rates, corresponding to thousands of deaths in European Union countries, such as the UK.

Will Hutton, in his outstanding book, Them and Us, writes on Page 9:

Nor is the impact just economic.  The sudden flipping from the wild optimism of the boom to the personal gloom and self-doubt of recession and system-wide financial crisis is bad for health and well-being.

So it appears as if there’s no shortage of reasons why engaging the power of love offers infinite possibilities for us all.

The BBC recently reported on research that shows that people in love can lower their levels of pain.

Love hurts, at least according to many a romantic songwriter, but it may also help ease pain, US scientists suggest.

Brain scans suggest many of the areas normally involved in pain response are also activated by amorous thoughts.

Stanford University researchers gave 15 students mild doses of pain, while checking if they were distracted by gazing at photos of their beloved.

Later on it that BBC item, it reads thus:

Professor Paul Gilbert, a neuropsychologist from the University of Derby, said that the relationship between emotional states and the perception of pain was clear.

He said: “One example is a footballer who has suffered quite a painful injury, but who is able to continue playing because of his emotionally charged state.”

He added that while the effect noticed by the Stanford researchers might only be short-lived in the early stages of a love affair, it may well be replaced by something similar later in a relationship, with a sense of comfort and wellbeing generating the release of endorphins.

“It’s important to recognise that people who feel alone and depressed may have very low pain thresholds, whereas the reverse can be true for people who feel secure and cared for.

Prof Gilbert states on his web page that “After years of exploring the processes underpinning shame and its role in a variety of psychopathologies,

 

Prof. Gilbert

 

my current research is exploring the neurophysiology and therapeutic effectiveness of compassion focused therapy.” (My italics.)

The old adage that you can’t love another if you don’t love yourself is based on very high levels of awareness. So the starting point to gaining the power of love is self-awareness.  Here’s something from MIND:

Good mental health isn’t something you have, but something you do. To be mentally healthy you must value and accept yourself. This means that:

  • You care about yourself and you care for yourself. You love yourself, not hate yourself. You look after your physical health – eat well, sleep well, exercise and enjoy yourself.
  • You see yourself as being a valuable person in your own right. You don’t have to earn the right to exist. You exist, so you have the right to exist.
  • You judge yourself on reasonable standards. You don’t set yourself impossible goals, such as ‘I have to be perfect in everything I do’, and then punish yourself when you don’t reach those goals.

Finally, back to romantic love.  The most glorious feeling in the world.

Again expressed so beautifully by Rumi“The minute I heard my first love story I started looking for you, not knowing how blind that was. Lovers don’t finally meet somewhere. They’re in each other all along.”

Some things are timeless.

By Paul Handover