There is no shortage of glorious stories about dogs, and thank goodness for that! Recently I saw an article on The Dodo about a dog and I wanted to share it with you.
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Dog Dumped In Desert Finds Construction Site — Then Begs Workers To Save Her
When Jeanean Gillespie clocked into work at a construction site earlier this month, she expected to see the usual handful of people around. Her office, located on an uninhabited stretch of desert, managed the new housing developments being built — and no one, other than her team of workers, was authorized to be there.
So when she saw two tiny eyes peering at her through her office doorway that morning, she jumped. The tiny pup had seemingly shown up out of nowhere, and she was desperate for someone to see her.
Suzette Hall
“She wanted to be noticed, she wanted help,” Suzette Hall, founder of Logan’s Legacy 29, wrote on Facebook. “Thank goodness my dear, dear friend, Jeanean Gillespie, worked there.”
Gillespie’s heart dropped when she realized the little dog, later named Sage, was all alone in the dangerous desert. With bobcats and coyotes lurking nearby, Gillespie knew time was of the essence to save Sage.
The compassionate worker tried repeatedly to capture Sage, but the scared pup ran away every time. After a few failed attempts, Gillespie called Hall for backup and placed food and water by the door for her in the meantime.
Suzette Hall
Sage was frightened by her new friends, but she still felt safe in their care. As they came up with a rescue plan, Sage figured out how to get as close as possible to them while still keeping her distance.
“She would sleep outside the office doors at night,” Hall wrote. “They all tried to help her, but she wouldn’t let anyone get close.”
Suzette Hall
Gillespie tried gaining Sage’s trust each day and eventually lured her inside the office. Hall arrived soon after, and the experienced rescuer recognized Sage’s demeanor instantly.
“When I got there, she was so scared, but she wanted to surrender so bad,” Hall said. “She was exhausted.”
Suzette Hall
Hall calmed the skittish dog and successfully scooped her up shortly after arriving. As scared as Sage was, she instantly felt comforted in Hall’s arms.
“[W]ithin minutes, she melted safely into my arms,” Hall wrote. “She knew she was safe from loneliness …”
Suzette Hall
Gillespie waved goodbye to the resilient pup as Hall loaded her into the car and drove off to Camino Pet Hospital. After days of surviving on her own in the desert, Sage got some much-needed rest.
“She fell fast asleep on the drive back,” Hall said. “She closed both eyes for the first time in days. She was rescued and she knew it.”
Suzette Hall
It’s been a couple of weeks since Sage’s rescue, and the survivor pup is still recovering from the ordeal. Aside from needing a growth removed, a dental cleaning and a spay, Sage is overall healthy. But her spirit is still broken.
“Poor Sage is not feeling well … her blood work came back normal, but she is just so sad,” Hall told The Dodo. “She needs love. She is just longing for it.”
Suzette Hall
Sage is scheduled for surgery soon, and Hall hopes to find her an amazing family once she’s feeling better. Until then, she’ll keep showering Sage with the love she’s always deserved.
“She’s such a sweet baby,” Hall said.
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I just love stories like this one. Sweet, sweet Sage!
Dogs in many ways are just like us humans. Scared of being alone and rejected but always deserving of love. Perfect!
EVENT: A coronal mass ejection (CME) is an eruption of solar material. When they arrive at Earth, a geomagnetic storm can result. Watches at this level are very rare. TIMING: Several CMEs are anticipated to merge and arrive at Earth on May 12th. EFFECTS: The general public should visit our webpage to keep properly informed. The aurora mav become visible over much of the northern half of the country, and maybe as far south as Alabama to northern California.
Meanwhile, Earth.com presented the following (and it is a long but extremely interesting report):
Update: New solar flare, secondary peak today in this “Extreme” solar storm
The Sun released another powerful burst of energy today, known as a solar flare, reaching its peak intensity at 12:26 p.m. Eastern Time. The flare originated from a region on the Sun’s surface called sunspot Region 3664, which has been quite active lately.
NASA’s Solar Dynamics Observatory, a spacecraft that keeps a constant eye on our nearest star, was able to capture a striking image of this latest solar outburst.
Solar flares are immense explosions on the Sun that send energy, light and high speed particles into space. They occur when the magnetic fields in and around the Sun reconnect, releasing huge amounts of stored magnetic energy. Flares are our solar system’s most powerful explosive events.
The NOAA’s Space Weather Prediction Center (SWPC) has extended the Geomagnetic Storm Warning until the afternoon of May 13, 2024.
Understanding different classes of solar flares
Today’s flare was classified as an X1.0 flare. Solar flares are categorized into classes based on their strength, with X-class flares being the most intense. The number provides additional information about the flare’s strength within that class. An X1 flare is ten times more powerful than an M1 flare.
These energetic solar eruptions can significantly impact Earth’s upper atmosphere and near-Earth space environment. Strong flares can disrupt high-frequency radio communications and GPS navigation signals. The particle radiation and X-rays from flares can also pose potential risks to astronauts in space.
Additionally, the magnetic disturbances from flares, if particularly strong, have the ability to affect electric power grids on Earth, sometimes causing long-lasting blackouts.
However, power grid problems are more commonly caused by coronal mass ejections (CMEs), another type of powerful solar eruption often associated with strong flares.
Scientists are always on alert, monitoring the Sun for these explosive events so that any potential impacts can be anticipated and prepared for. NASA’s Solar Dynamics Observatory, along with several other spacecraft, help provide this early warning system.
Stay tuned to Earth.com and the Space Weather Prediction Center (SWPC) for updates.
Update — May 12, 2024 at 9:41 AM EDT
The ongoing geomagnetic storm is expected to intensify later today, Sunday, May 12, 2024. Several intense Coronal Mass Ejections (CMEs), traveling from the Sun at speeds up to 1,200 miles per second, are anticipated to reach the Earth’s outer atmosphere by late afternoon.
Over the past two days, preliminary reports have surfaced regarding power grid irregularities, degradation of high-frequency communications, GPS outages, and satellite navigation issues. These disruptions are likely to persist as the geomagnetic storm strengthens.
Auroras visible across the continental United States
Weather permitting, auroras will be visible again tonight over most of the continental United States. This spectacular display of lights is a direct result of the ongoing geomagnetic storm.
The threat of additional strong solar flares and CMEs, which ultimately result in spectacular aurora displays, will persist until the large and magnetically complex sunspot cluster, NOAA Region 3664, rotates out of view of the Earth. This is expected to occur by Tuesday, May 14, 2024.
Solar activity remains at moderate to high levels
Solar activity has been at moderate levels over the past 24 hours. Region 3664 produced an M8.8/2b flare, the strongest of the period, on May 11 at 15:25 UTC. A CME signature was observed, but an Earth-directed component is not suspected.
Solar activity is expected to remain at high levels from May 12-14, with M-class and X-class flares anticipated, primarily due to the flare potential of Region 3664.
Energetic particle flux and solar wind enhancements
The greater than 10 MeV proton flux reached minor to moderate storm levels on May 10. Additional proton enhancements are likely on May 13-14 due to the flare potential and location of Region 3664.
The solar wind environment has been strongly enhanced due to continued CME activity. Solar wind speeds reached a peak of around 620 miles/second on May 12 at 00:55 UTC.
A strongly enhanced solar wind environment and continued CME influences are expected to persist on May 12-13, and begin to wane by May 14.
Geomagnetic field reaches G4 “Severe” storm levels
The geomagnetic field reached G4 (Severe) geomagnetic storm levels in the past 24 hours due to continued CME activity.
Periods of G3 (Strong) geomagnetic storms are likely, with isolated G4 levels possible, on May 12. Periods of G1-G3 (Minor-Strong) storming are likely on May 13, and periods of G1 (Minor) storms are likely on May 14.
Stay informed and enjoy the light show
As the geomagnetic storm rages on, we must remain vigilant and prepared for the potential consequences. Monitor official sources for updates on the storm’s progress and any further disruptions to our technological infrastructure.
Take a moment to step outside tonight and marvel at the incredible auroras painting the night sky — a stunning reminder of the raw power and beauty of our Sun.
While these solar storms can cause temporary inconveniences, they also provide us with an opportunity to reflect on our place in the universe and the awe-inspiring forces that shape our world.
Stay tuned to Earth.com and the Space Weather Prediction Center (SWPC) for updates.
Understanding geomagnetic solar storms
Geomagnetic storms are disturbances in the Earth’s magnetic field caused by the interaction between the solar wind and the planet’s magnetosphere. These storms can have significant impacts on technology, infrastructure, and even human health.
Causes of geomagnetic storms
Geomagnetic storms typically originate from the Sun. They are caused by two main phenomena:
Coronal Mass Ejections (CMEs): Massive bursts of plasma and magnetic fields ejected from the Sun’s surface.
Solar Flares: Intense eruptions of electromagnetic radiation from the Sun’s surface.
When these events occur, they send charged particles streaming towards Earth at high speeds, which can take anywhere from one to five days to reach our planet.
Effects on Earth’s magnetic field
As the charged particles from CMEs and solar flares reach Earth, they interact with the planet’s magnetic field. This interaction causes the magnetic field lines to become distorted and compressed, leading to fluctuations in the strength and direction of the magnetic field.
Impacts on technology and infrastructure
Geomagnetic storms can have significant impacts on various aspects of modern technology and infrastructure:
Power Grids: Strong geomagnetic storms can induce currents in power lines, causing transformers to overheat and potentially leading to widespread power outages.
Satellite Communications: Charged particles can damage satellite electronics and disrupt communication signals.
GPS and Navigation Systems: Geomagnetic disturbances can interfere with the accuracy of GPS and other navigation systems.
Radio Communications: Storms can disrupt radio signals, affecting communication systems that rely on HF, VHF, and UHF bands.
As charged particles collide with Earth’s upper atmosphere, they excite oxygen and nitrogen atoms, causing them to emit light in various colors.
Monitoring and forecasting
Scientists continuously monitor the Sun’s activity and use various instruments to detect and measure CMEs and solar flares.
This data helps them forecast the timing and intensity of geomagnetic storms, allowing for better preparedness and mitigation of potential impacts.
Historical geomagnetic storms
Some of the most notable geomagnetic storms in history include:
The Carrington Event (1859): The most powerful geomagnetic storm on record, which caused widespread telegraph system failures and auroras visible as far south as the Caribbean.
The Halloween Storms (2003): A series of powerful geomagnetic storms that caused power outages in Sweden and damaged transformers in South Africa.
The Quebec Blackout (1989): A geomagnetic storm that caused a massive power outage affecting millions of people in Quebec, Canada.
Understanding geomagnetic storms is crucial for protecting our technology-dependent world and mitigating the potential risks associated with these powerful space weather events.
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I have no excuse for not being better at looking after my teeth, for one of my elder sisters, Corinne, was a dental assistant and when I was in my mid-fifties I moved down to South-West England and bought a home just a few miles from Corinne’s home. Thereafter she looked after my teeth at the dental practice in Totnes.
But I was careless in following Corinne’s advice and it wasn’t until in my seventies, and living in Merlin, Oregon, that I saw the light; so to speak!
Read this!
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Healthy teeth are wondrous and priceless – a dentist explains why and how best to protect them
Yet, in a society where 1 out of 5 Americans ages 75 and up live without their teeth, many people may not realize that teeth are designed to stay with us for a lifetime.
In the process, I have developed reverence for natural teeth and for the complex beauty of these biological and mechanical masterpieces.
Designed for lifelong function
The secret of teeth longevity lies in their durability as well as in how they are anchored to the jaw – picture a hammer and its hand grip. For each tooth, durability and anchorage are functions of the complex interface between six different tissues; each alone is a biological marvel.
For anchorage, the cementum, ligament and bone grip the tooth at its root portion that is buried under the gum. The ligament, a soft tissue that is about 0.2 millimeters wide (about the diameter of four hairs), attaches the cementum of the root on one end to the bone of the jaw on the other end. It serves to anchor the tooth as well as to cushion its movement during chewing.
For durability, however, the secret lies in the enamel, dentin and pulp – our focus in this discussion.
The enamel is the protective shell that covers the visible part of the tooth above the gum. Thanks to its high mineral content, enamel is the hardest tissue in the body. It needs to be, since it acts as a shield against the constant impact of chewing.
Enamel does not contain cells, blood vessels or nerves, so it is nonliving and nonsensitive. Enamel is also non-regenerating. Once destroyed by decay or broken by misuse such as ice chewing, nail biting or bottle opening – or touched by the dental drill – that part of our priceless enamel is gone for good.
Because it interfaces with a germ-laden world, the enamel is also where decay starts. When acid-generating bacteria accumulate on unbrushed or poorly brushed teeth, they readily dissolve the minerals in the enamel.
How bacteria invade the teeth and cause cavities.
Like hair or fingernails, the non-innervated enamel is not sensitive. The decay advances through the 2.5-millimeter thick (tenth of an inch) layer of enamel painlessly. When caught at that phase during a dental checkup visit, the dentist can treat the decay with a relatively conservative filling that hardly compromises the tooth’s structural integrity.
Because of its high mineral content, enamel is stiff. Its lifelong support is provided by the more resilient infrastructure – the dentin.
Dentin and pulp – body and heart
With less mineral content than enamel, dentin is the resilient body of the tooth. It is a living tissue formed of parallel tiny tubes housing fluid and cellular extensions. Both originate from the pulp.
The pulp is the tooth’s soft tissue core. Vastly rich in cells, blood vessels and nerves, it is the life source of the tooth – its heart – and the key to its longevity.
Like smoke detectors communicating with a remote fire station, the cellular extensions within the dentin sense decay as soon as it breaks through the nonsensitive layer of enamel into dentin. Once the extensions communicate the danger signal to the pulp, our tooth sensitivity alarm goes off: The tooth heart is in flames.
The inflamed pulp initiates two protective actions. The first is to secrete an additional layer of dentin to delay the approaching attack. The second is toothache, a call to visit the dentist.
The earlier the visit, the less the drilling and the smaller the filling. If caught in time, most of the tooth’s natural tissues will be preserved and the pulp will likely regain its healthy state. If caught too late, the pulp slowly dies out.
Without its heart, a nonliving tooth has no defense against further decay invasion. Without a hydration source, a dried-out dentin will sooner or later break under the forces of constant chewing. Besides, a tooth that has already lost a significant portion of its natural structure to decay, cavity preparation or root canal instrumentation becomes weak, with limited longevity.
In other words, the tooth is never the same without its heart. Pulpless, the tooth loses its womb-to-tomb endurance and mother nature’s lifelong warranty.
The tooth coming together
More complex – and more precious – than a pearl within an oyster, the formation of a tooth within our jawbone involves layered mineral deposition. As tooth development progresses in a process of ultimate cellular engineering, the cells of the six aforementioned tissues – enamel, dentin, pulp, cementum, ligament and bone – multiply, specialize and mineralize synchronously with each other to form uniquely interlocking interfaces: enamel to dentin, dentin to pulp, cementum to dentin and cementum to ligament to bone.
In a progress akin to 3D printing, the tooth crown grows vertically to full formation. Simultaneously, the root continues its elongation to eventually launch off the crown from within the bone across the gum to appear in the mouth – the event known as teething. It is about that time, around 12 years of age, that our set of adult teeth is complete. These pearls are set to endure a lifetime and are undoubtedly worth preserving.
Save your teeth, visit the dentist
Tooth decay, the most prevalent disease in humans, is both predictable and preventable. The earlier it is caught, the more the tooth integrity can be preserved. Since the process starts painlessly, it is imperative to visit the dentist regularly to keep those insidious germs in check.
During your checkup visit, the dental professional will clean your teeth and check for early decay. If you are diligent with your daily preventive measures, the good news for you will be no news – enough to make anyone smile.
Although I was born in London in 1944, as a result of an affair between my father and mother, my father had two daughters with his wife, Maud, and Rhona and Corinne, for they were their names, took me under their wing. In the 50s Maud, Rhona and Corinne all moved to Devon and I started going regularly to Totnes. When I started driving I usually stopped for a break close by Stonehenge so the site has a special interest to me.
So when I saw this article in The Conversation it had to be shared.
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Stonehenge may have aligned with the Moon as well as the Sun
When it comes to its connection to the sky, Stonehenge is best known for its solar alignments. Every midsummer’s night tens of thousands of people gather at Stonehenge to celebrate and witness the rising Sun in alignment with the Heel stone standing outside of the circle. Six months later a smaller crowd congregates around the Heel stone to witness the midwinter Sun setting within the stone circle.
But a hypothesis has been around for 60 years that part of Stonehenge also aligns with moonrise and moonset at what is called a major lunar standstill. Although a correlation between the layout of certain stones and the major lunar standstill has been known about for several decades, no one has systematically observed and recorded the phenomenon at Stonehenge.
This is what we are aiming to do in a project bringing together archaeologists, astronomers and photographers from English Heritage, Oxford, Leicester and Bournemouth universities as well as the Royal Astronomical Society.
There is now an abundance of archaeological evidence that indicates the solar alignment was part of the architectural design of Stonehenge. Around 2500 BC, the people who put up the large stones and dug an avenue into the chalk seemed to want to cement the solstice axis into the architecture of Stonehenge.
Archaeological evidence from nearby Durrington Walls, the place where scientists believe the ancient people who visited Stonehenge stayed, indicates that of the two solstices it was the midwinter one that drew the largest crowd.
But Stonehenge includes other elements, such as 56 pits arranged in a circle, an earthwork bank and ditch, and other smaller features such as the four station stones. These are four sarsen stones, a form of silicified sandstone common in Wiltshire, that were carefully placed to form an almost exact rectangle encompassing the stone circle.
Only two of these stones are still there, and they pale in comparison to their larger counterparts as they are only a few feet high. So what could their purpose be?
Only two of the station stones are still there. Drone Explorer/Shutterstock
Lunar standstill
The rectangle that they form is not just any rectangle. The shorter sides are parallel to the main axis of the stone circle and this may be a clue as to their purpose. The longer sides of the rectangle skirt the outside of the stone circle.
It is these longer sides that are thought to align with the major lunar standstill. If you marked the position of moonrise (or set) over the course of a month you would see that it moves between two points on the horizon. These southern and northern limits of moonrise (or set) change on a cycle of 18.6 years between a minimum and a maximum range – the so-called minor and major lunar standstills, respectively.
The major lunar standstill is a period of about one and a half to two years when the northernmost and southernmost moonrises (or sets) are furthest apart. When this happens the Moon rises (and sets) outside the range of sunrises and sets, which may have imbued this celestial phenomenon with meaning and significance.
The range of Moonrise positions on the horizon during minor and major lunar standstills. Fabio Silva, CC BY-NC
The strongest evidence we have for people marking the major lunar standstill comes from the US southwest. The Great House of Chimney Rock, a multi-level complex built by the ancestral Pueblo people in the San Juan National Forest, Colorado, more than 1,000 years ago.
It lies on a ridge that ends at a natural formation of twin rock pillars – an area that has cultural significance to more than 26 native American tribal nations. From the vantage point of the Great House, the Sun will never rise in the gap between the pillars.
However, during a major standstill the Moon does rise between them in awe-inspiring fashion. Excavations unearthed preserved wood that meant researchers could date to the year episodes of construction of the Great House.
Of six cutting dates, four correspond to major lunar standstill years between the years AD1018 and AD1093, indicating that the site was renewed, maintained or expanded on consecutive major standstills.
Returning to southern England, archaeologists think there is a connection between the major lunar standstill and the earliest construction phase of Stonehenge (3000-2500 BC), before the sarsen stones were brought in.
Several sets of cremated human remains from this phase of construction were found in the southeastern part of the monument in the general direction of the southernmost major standstill moonrise, where three timber posts were also set into the bank. It is possible that there was an early connection between the site of Stonehenge and the Moon, which was later emphasised when the station stone rectangle was built.
The major lunar standstill hypothesis, however, raises more questions than it answers. We don’t know if the lunar alignments of the station stones were symbolic or whether people were meant to observe the Moon through them. Neither do we know which phases of the Moon would be more dramatic to witness.
A search for answers
In our upcoming work, we will be trying to answer the questions the major lunar standstill hypothesis raises. It’s unclear whether the Moon would have been strong enough to cast shadows and how they would have interacted with the other stones. We will also need to check whether the alignments can still be seen today or if they are blocked by woods, traffic and other features.
The Moon will align with the station stone rectangle twice a month from about February 2024 to November 2025, giving us plenty of opportunities to observe this phenomenon in different seasons and phases of the Moon.
To bring our research to life, English Heritage will livestream the southernmost Moonrise in June 2024, and host a series of events throughout the year, including talks, a pop-up planetarium, stargazing and storytelling sessions.
Across the Atlantic, our partners at the US Forest Service are developing educational materials about the major lunar standstill at Chimney Rock National Monument. This collaboration will result in events showcasing and debating the lunar alignments at both Stonehenge and at Chimney Rock.
It is about Whale songs and is just a fabulous sound!
Last Friday there was an item on the BBC about whale song. It appears I can publish the article for you all. It is my choice over my regular Sunday Picture Parade. I hope you agree! Update: The track just 26 seconds long cannot be reproduced in this post.
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Whale song mystery solved by scientists
21 February 2024, By Helen Briggs and Victoria Gill,Science correspondents, BBC News
Humpback whale breaching near Bering Island, Kamchatka, Russia – Olga Filatova, University of Southern Denmark
Scientists have worked out how some of the largest whales in the ocean produce their haunting and complex songs.
Humpbacks and other baleen whales have evolved a specialised “voice box” that enables them to sing underwater.
The discovery, published in the journal Nature, has also revealed why the noise we make in the ocean is so disruptive for these ocean giants.
Whale song is restricted to a narrow frequency that overlaps with the noise produced by ships. “Sound is absolutely crucial for their survival, because it’s the only way they can find each other to mate in the ocean,” explained Prof Coen Elemans, of the University of Southern Denmark, who led the study.
“[These are some] of the most enigmatic animals that ever lived on the planet,” he told BBC News. “They are amongst the biggest animals, they’re smart and they’re highly social.”
Humpback whale song (For whatever reason the track cannot be listened to on this blog. That is a great shame as the song is magnificent. So please go to the BBC website for this; the link is https://www.bbc.com/news/science-environment-68358414 )
Baleen whales are a group of 14 species, including the blue, humpback, right, minke and gray whale. Instead of teeth, the animals have plates of what is called baleen, through which they sieve huge mouthfuls of tiny creatures from the water.
Exactly how they produce complex, often haunting songs has been a mystery until now. Prof Elemans said it was “super-exciting” to have figured it out.
A diver descends between three juvenile humpback whales the size of buses – Karim Iliya
He and his colleagues carried out experiments using larynxes, or “voice boxes”, that had been carefully removed from three carcasses of stranded whales – a minke, a humpback and a sei whale. They then blew air through the massive structures to produce the sound.
In humans, our voices come from vibrations when air passes over structures called vocal folds in our throat. Baleen whales, instead, have a large U-shaped structure with a cushion of fat at the top of the larynx.
This vocal anatomy allows the animals to sing by recycling air, and it prevents water from being inhaled.
Artwork indicating the cartilages of the larynx in a humpback whale – Patricia Jaqueline Matic, Vienna
The researchers produced computer models of the sounds and showed that baleen whale song is restricted to a narrow frequency which overlaps with noise produced by shipping vessels.
“They cannot simply choose to, for example, sing higher to avoid the noise we make in the ocean,” explained Prof Elemans.
His study demonstrated how our ocean noise could prevent whales from communicating over long distances. That knowledge could be vital for the conservation of humpbacks, blue whales and other endangered giants of the sea.
It also provides insight into questions that researchers have been asking for decades about these eerie songs, which some sailors used to attribute to ghosts or mythical sea creatures.
Whale communication expert Dr Kate Stafford, from Oregon State University, called the study “groundbreaking”.
“The production and reception of sound is the most important sense for marine mammals, so any studies that elucidate how they make sounds has the potential to move the field forward,” she told BBC News.
Researchers say evidence of the harm ocean noise pollution can do has been building for decades – Alamy
The research also paints an evolutionary picture – of how the ancestors of whales returned to the oceans from the land, and the adaptations that made it possible to communicate underwater.
The way so-called toothed whales produce sound is better understood, because the animals are easier to study. These marine mammals, which include dolphins, orcas, sperm whales and porpoises, blow air through a special structure in their nasal passages.
Dr Ellen Garland, from the Sea Mammal Research Unit at the University of St Andrews, said: “I’ve always wondered exactly how baleen whales – especially humpbacks, which my research is focused on – actually produce the variety of sounds they do.
“Studying large whales is extremely challenging at the best of times, but trying to uncover how they produce sound when you may not even be able to see them underwater while vocalising is an added level of difficulty, so these researchers have been very creative.”
Dr Stafford added that the mammals’ ability to make such complex vocal signals was “remarkable” and highlighted “how special these animals are”.
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There! I do hope you all agree that this was very worthwhile. Plus, you all got to listen to those twenty-six seconds of the very beautiful sound.
A riveting history of counting and calculating from the time of the cave dwellers to the late twentieth century, The Universal History of Numbers is the first complete account of the invention and evolution of numbers the world over. As different cultures around the globe struggled with problems of harvests, constructing buildings, educating their citizens, and exploring the wonders of science, each civilization created its own unique and wonderful mathematical system.
Dubbed the “Indiana Jones of numbers,” Georges Ifrah traveled all over the world for ten years to uncover the little-known details of this amazing story. From India to China, and from Egypt to Chile, Ifrah talked to mathematicians, historians, archaeologists, and philosophers. He deciphered ancient writing on crumbling walls; scrutinized stones, tools, cylinders, and cones; and examined carved bones, elaborately knotted counting strings, and X-rays of the contents of never-opened ancient clay accounting balls. Conveying all the excitement and joy of the process of discovery, Ifrah writes in a delightful storytelling style, recounting a plethora of intriguing and amusing anecdotes along the way.
Now to that article on The Conversation.
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From thousands to millions to billions to trillions to quadrillions and beyond: Do numbers ever end?
Why don’t numbers end? – Reyhane, age 7, Tehran, Iran
Here’s a game: Ask a friend to give you any number and you’ll return one that’s bigger. Just add “1” to whatever number they come up with and you’re sure to win.
The reason is that numbers go on forever. There is no highest number. But why? As a professor of mathematics, I can help you find an answer.
First, you need to understand what numbers are and where they come from. You learned about numbers because they enabled you to count. Early humans had similar needs – whether to count animals killed in a hunt or keep track of how many days had passed. That’s why they invented numbers.
But back then, numbers were quite limited and had a very simple form. Often, the “numbers” were just notches on a bone, going up to a couple hundred at most.
How numbers evolved throughout the centuries.
When numbers got bigger
As time went on, people’s needs grew. Herds of livestock had to be counted, goods and services traded, and measurements made for buildings and navigation. This led to the invention of larger numbers and better ways of representing them.
About 5,000 years ago, the Egyptians began using symbols for various numbers, with a final symbol for one million. Since they didn’t usually encounter bigger quantities, they also used this same final symbol to depict “many.”
The Greeks, starting with Pythagoras, were the first to study numbers for their own sake, rather than viewing them as just counting tools. As someone who’s written a book on the importance of numbers, I can’t emphasize enough how crucial this step was for humanity.
But there was a problem. Although the Greeks could mentally think of very large numbers, they had difficulty writing them down. This was because they did not know about the number 0.
Think of how important zero is in expressing big numbers. You can start with 1, then add more and more zeroes at the end to quickly get numbers like a million – 1,000,000, or 1 followed by six zeros – or a billion, with nine zeros, or a trillion, 12 zeros.
This brief history makes clear that numbers were developed over thousands of years. And though the Egyptians didn’t have much use for a million, we certainly do. Economists will tell you that government expenditures are commonly measured in millions of dollars.
Also, science has taken us to a point where we need even larger numbers. For instance, there are about 100 billion stars in our galaxy – or 100,000,000,000 – and the number of atoms in our universe may be as high as 1 followed by 82 zeros.
Don’t worry if you find it hard to picture such big numbers. It’s fine to just think of them as “many,” much like the Egyptians treated numbers over a million. These examples point to one reason why numbers must continue endlessly. If we had a maximum, some new use or discovery would surely make us exceed it.
The symbols of math include +, -, x and =.
Exceptions to the rule
But under certain circumstances, sometimes numbers do have a maximum because people design them that way for a practical purpose.
A good example is a clock – or clock arithmetic, where we use only the numbers 1 through 12. There is no 13 o’clock, because after 12 o’clock we just go back to 1 o’clock again. If you played the “bigger number” game with a friend in clock arithmetic, you’d lose if they chose the number 12.
Since numbers are a human invention, how do we construct them so they continue without end? Mathematicians started looking at this question starting in the early 1900s. What they came up with was based on two assumptions: that 0 is the starting number, and when you add 1 to any number you always get a new number.
These assumptions immediately give us the list of counting numbers: 0 + 1 = 1, 1 + 1 = 2, 2 + 1 = 3, and so on, a progression that continues without end.
You might wonder why these two rules are assumptions. The reason for the first one is that we don’t really know how to define the number 0. For example: Is “0” the same as “nothing,” and if so, what exactly is meant by “nothing”?
The second might seem even more strange. After all, we can easily show that adding 1 to 2 gives us the new number 3, just like adding 1 to 2002 gives us the new number 2003.
But notice that we’re saying this has to hold for any number. We can’t very well verify this for every single case, since there are going to be an endless number of cases. As humans who can perform only a limited number of steps, we have to be careful anytime we make claims about an endless process. And mathematicians, in particular, refuse to take anything for granted.
Here, then, is the answer to why numbers don’t end: It’s because of the way in which we define them.
Now, the negative numbers
How do the negative numbers -1, -2, -3 and more fit into all this? Historically, people were very suspicious about such numbers, since it’s hard to picture a “minus one” apple or orange. As late as 1796, math textbooks warned against using negatives.
The negatives were created to address a calculation issue. The positive numbers are fine when you’re adding them together. But when you get to subtraction, they can’t handle differences like 1 minus 2, or 2 minus 4. If you want to be able to subtract numbers at will, you need negative numbers too.
A simple way to create negatives is to imagine all the numbers – 0, 1, 2, 3 and the rest – drawn equally spaced on a straight line. Now imagine a mirror placed at 0. Then define -1 to be the reflection of +1 on the line, -2 to be the reflection of +2, and so on. You’ll end up with all the negative numbers this way.
As a bonus, you’ll also know that since there are just as many negatives as there are positives, the negative numbers must also go on without end!
Hello, curious kids! Do you have a question you’d like an expert to answer? Ask an adult to send your question to CuriousKidsUS@theconversation.com. Please tell us your name, age and the city where you live.
And since curiosity has no age limit – adults, let us know what you’re wondering, too. We won’t be able to answer every question, but we will do our best.
This article was written for those a great deal younger than I am. But, to be honest, it is a fascinating account of something so utterly basic to humans and human cognition.
I shall be 80 in November and I find myself thinking about death more often than I did a few years ago. As an example of how my mind has changed, yesterday I was contemplating renewing my subscription to the Free Inquiry magazine and wondering if I should renew it for two or three years? In other words will I still be alive in three years time? Silly but it is the truth. And that is not taking into account that I go to the Club Northwest two days a week and try and bike ride another two or three times a week.
Then let us not get into the topic of whether I will die before Jean or the reverse. That is an enormous subject and, thank goodness, where we live in Oregon one has the choice to die: “Two states, Oregon and Washington, currently have statutes providing a procedure for a terminally ill patient to request medication to end his or her life. These laws are sometimes referred to as “death with dignity” or “physician-assisted suicide” laws.“
All of which is an introduction to a recent article published in The Conversation that I republish below:
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Loneliness can kill, and new research shows middle-aged Americans are particularly vulnerable
Middle-aged Americans are lonelier than their European counterparts. That’s the key finding of my team’s recent study, published in American Psychologist.
Our study identified a trend that has been evolving for multiple generations, and affects both baby boomers and Gen Xers. Middle-aged adults in England and Mediterranean Europe are not that far behind the U.S. In contrast, middle-aged adults in continental and Nordic Europe reported the lowest levels of loneliness and stability over time.
We used survey data drawn from over 53,000 middle-aged adults from the U.S. and 13 European nations from 2002 to 2020. We tracked their reported changes in loneliness every two years across the midlife years of 45 to 65. This span provided us data from the so-called silent generation of people born between 1937 and 1945; baby boomers, born between 1946 and 1964; and members of Generation X, born between 1965 and 1974.
Our study makes clear that middle-aged Americans today are experiencing more loneliness than their peers in European nations. This coincides with existing evidence that mortality rates are rising for working-age adults in the U.S.
We focused on middle-aged adults for several reasons. Middle-aged adults form the backbone of society by constituting a majority of the workforce. But they also face increasing challenges today, notably greater demands for support from both their aging parents and their children.
Loneliness is considered a global public health issue. The U.S. surgeon general released an advisory report in 2023 documenting an epidemic of loneliness and a pressing need to increase social connection. Other nations, such as the U.K.and Japan, have appointed ministers of loneliness to ensure relationships and loneliness are considered in policymaking.
You can be lonely even when surrounded by people.
What still isn’t known
Why are middle-aged Americans exceptional when it comes to loneliness and poorer overall mental and physical health?
We did not directly test this in our study, but in the future we hope to zero in on the factors driving these trends. We think that the loneliness Americans are reporting compared to peer nations comes down to limited social safety nets and to cultural norms that prioritize individualism over community.
Individualization carries psychological costs, such as reductions in social connections and support structures, which are correlates of loneliness. Relative to the other nations in our study, Americans have a higher tendency to relocate, which is associated with weak social and community ties.
One of the reasons why we chose countries from across Europe is that they differ dramatically from the U.S. when it comes to social and economic opportunities and social safety nets. Social and economic inequalities likely increase one’s loneliness through undermining one’s ability to meet basic needs. Generous family and work policies likely lessen midlife loneliness through reducing financial pressures and work-family conflict, as well as addressing health and gender inequities.
Our findings on loneliness in conjunction with previous studies on life expectancy, health, well-being and cognition suggest that being middle-aged in America is a risk factor for poor mental and physical health outcomes.
The Research Brief is a short take on interesting academic work.
And on yesterday afternoon, the Sunday, I went for a bike ride of 22 miles. I loved the ride especially as I listened to music all the way; I have a portable speaker that clips near the front handlebars and plays tracks from my iPhone.
Then there was an article in March from the University of Bristol: “Happiness can be learnt, but we have to work at it – study finds.“
It reads:
Press release issued: 11 March 2024
We can learn to be happy, but only get lasting benefits if we keep practising, a first-of-its-kind study has revealed.
The team behind the University of Bristol’s ‘Science of Happiness’ course had already discovered that teaching students the latest scientific studies on happiness created a marked improvement in their wellbeing.
But their latest study found that these wellbeing boosts are short-lived unless the evidence-informed habits learnt on the course – such as gratitude, exercise, meditation or journaling – are kept up over the long-term.
Senior author Professor Bruce Hood said: “It’s like going to the gym – we can’t expect to do one class and be fit forever. Just as with physical health, we have to continuously work on our mental health, otherwise the improvements are temporary.”
Launched in 2018, the University of Bristol’s Science of Happiness course was the first of its kind in the UK. It involves no exams or coursework, and teaches students what the latest peer-reviewed studies in psychology and neuroscience say really makes us happy.
Students who took the course reported a 10 to 15% improvement in wellbeing. But only those who continued implementing the course learnings maintained that improved wellbeing when they were surveyed again two years on.
Published in the journal Higher Education, it is the first to track wellbeing of students on a happiness course long after they have left the course.
Professor Hood said: “This study shows that just doing a course – be that at the gym, a meditation retreat or on an evidence-based happiness course like ours – is just the start: you must commit to using what you learn on a regular basis.
“Much of what we teach revolves around positive psychology interventions that divert your attention away from yourself, by helping others, being with friends, gratitude or meditating.
“This is the opposite of the current ‘selfcare’ doctrine, but countless studies have shown that getting out of our own heads helps gets us away from negative ruminations which can be the basis of so many mental health problems.”
Professor Hood has distilled the Science of Happiness course into a new book, out on March 10. ‘The Science of Happiness: Seven Lessons for Living Well’ reveals an evidence-informed roadmap to better wellbeing.
The other paper authors are fellow University of Bristol academics Catherine Hobbs and Sarah Jelbert, and Laurie R Santos, a Yale academic whose course inspired Bristol’s Science of Happiness course.
The challenge in deciding what is best for our forests.
As a great many of you already know, we live in a rural area in Southern Oregon. It is a beautiful place and we look out to the East upon Mount Sexton. But locally a great many houses are built on rural sites with the local forest just yards away.
In the U.S., wildland firefighters are able to stop about 98% of all wildfires before the fires have burned even 100 acres. That may seem comforting, but decades of quickly suppressing fires has had unintended consequences.
However, fuel accumulation isn’t the only consequence of fire suppression.
Fire suppression also disproportionately reduces certain types of fire. In a new study, my colleagues and I show how this effect, known as the suppression bias, compounds the impacts of fuel accumulation and climate change.
What happened to all the low-intensity fires?
Most wildfires are low-intensity. They ignite when conditions aren’t too dry or windy, and they can often be quickly extinguished.
The 2% of fires that escape suppression are those that are more extreme and much harder to fight. They account for about 98% of the burned area in a typical year.
The author and colleagues discuss changing wildfire in Montana and Idaho’s Bitterroot Mountains. By Mark Kreider.
In our study, we used a fire modeling simulation to explore the effects of the fire suppression bias and see how they compared to the effects of global warming and fuel accumulation alone.
Fuel accumulation and global warming both inherently make fires more severe. But over thousands of simulated fires, we found that allowing forests to burn only under the very worst conditions increased fire severity by the same amount as more than a century’s worth of fuel accumulation or 21st-century climate change.
The suppression bias also changes the way plants and animals interact with fire.
By removing low-intensity fires, humans may be changing the course of evolution. Without exposure to low-intensity fires, species can lose traits crucial for surviving and recovering from such events.
In contrast, low-intensity fires free up space and resources for new growth, while still retaining living trees and other biological legacies that support seedlings in their vulnerable initial years.
By quickly putting out low-intensity fires and allowing only extreme fires to burn, conventional suppression reduces the opportunities for climate-adapted plants to establish and help ecosystems adjust to changes like global warming.
Firefighters keep watch for smoke from a fire tower in the Coeur d’Alene National Forest, Idaho, in 1932. Forest Service photo by K. D. Swan
Suppression makes burned area increase faster
As the climate becomes hotter and drier, more area is burning in wildfires. If suppression removes fire, it should help slow this increase, right?
In fact, we found it does just the opposite.
We found that while conventional suppression led to less total area burning, the yearly burned area increased more than three times faster under conventional suppression than under less aggressive suppression efforts. The amount of area burned doubled every 14 years with conventional fire suppression under simulated climate change, instead of every 44 years when low- and moderate-intensity fires were allowed to burn. That raises concerns for how quickly people and ecosystems will have to adapt to extreme fires in the future.
With conventional fire suppression, the average fire size will increase faster as the planet warms than it would under a less aggressive approach. Mark Kreider
The fact that the amount of area burned is increasing is undoubtedly driven by climate change. But our study shows that the rate of this increase may also be a result of conventional fire management.
The near total suppression of fires over the last century means that even a little additional fire in a more fire-prone future can create big changes. As climate change continues to fuel more fires, the relative increase in area burned will be much bigger.
To address the wildfire crisis, fire managers can be less aggressive in suppressing low- and moderate-intensity fires when it is safe to do so. They can also increase the use of prescribed fire and cultural burning to clear away brush and other fuel for fires.
These low-intensity fires will not only reduce the risk of future extreme fires, but they also will create conditions that favor the establishment of species better suited to the changing climate, thereby helping ecosystems adapt to global warming.
Coexisting with wildfire requires developing technologies and approaches that enable the safe management of wildfires under moderate burning conditions. Our study shows that this may be just as necessary as other interventions, such as reducing the number of fires unintentionally started by human activities and mitigating climate change.
The article makes a great deal of sense and presents a solution that may not be our first thought. But especially the message is fundamentally important, and please watch the video because it very clearly presents the benefits of the solution.
So we want more low-intensity fires! Please! Or to say it another way, we want more prescribed fires.
A dramatic article from George Monbiot about water!
I read the latest from George Monbiot yesterday morning and was startled. Startled because I hadn’t thought of it before. Startled because here in Merlin, Southern Oregon we have had so much rain since the beginning of November, 2023 that our acres are swimming in the wet. Startled since that time also our Bummer Creek, which flows across our land, has been at record depths.
But this report is incredibly important and I wanted to share it with you, as I have Geo. Monbiot’s permission for so doing.
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Dry Run
Posted on11th March 2024
The mega-droughts in Spain and the US are a portent of a gathering global water crisis.
By George Monbiot, published in the Guardian 4th March 2024
There’s a flaw in the plan. It’s not a small one: it is an Earth-sized hole in our calculations. To keep pace with the global demand for food, crop production needs to grow by at least 50% by 2050. In principle, if nothing else changes, this is feasible, thanks mostly to improvements in crop breeding and farming techniques. But everything else is going to change.
Even if we set aside all other issues – heat impacts, soil degradation, epidemic plant diseases accelerated by the loss of genetic diversity – there is one which, without help from any other cause, could prevent the world’s people from being fed. Water.
A paper published in 2017 estimated that to match crop production to expected demand, water use for irrigation would have to increase by 146% by the middle of this century. One minor problem. Water is already maxed out.
In general, the dry parts of the world are becoming drier, partly through reduced rainfall; partly through declining river flow as mountain ice and snow retreats; and partly through rising temperatures causing increased evaporation and increased transpiration by plants. Many of the world’s major growing regions are now threatened by “flash droughts”, in which hot and dry weather sucks moisture from the soil at frightening speed. Some places, such as the southwest of the US, now in its 24th year of drought, may have switched permanently to a drier state. Rivers fail to reach the sea, lakes and aquifers are shrinking, species living in freshwater are becoming extinct at roughly five times the rate of species that live on land and major cities are threatened by extreme water stress.
Already, agriculture accounts for 90% of the world’s freshwater use. We have pumped so much out of the ground that we’ve changed the Earth’s spin. The water required to meet growing food demand simply does not exist.
That 2017 paper should have sent everyone scrambling. But as usual, it was ignored by policymakers and the media. Only when the problem arrives in Europe do we acknowledge that there’s a crisis. But while there is understandable panic about the drought in Catalonia and Andalusia, there’s an almost total failure among powerful interests to acknowledge that this is just one instance of a global problem, a problem that should feature at the top of the political agenda.
Though drought measures have triggered protests in Spain, this is far from the most dangerous flashpoint. The catchment of the Indus river is shared by three nuclear powers – India, Pakistan and China – and several highly unstable and divided regions already afflicted by hunger and extreme poverty. Today, 95% of the river’s dry season flow is extracted, mostly for irrigation. But water demand in both Pakistan and India is growing rapidly. Supply – temporarily boosted by the melting of glaciers in the Himalayas and the Hindu Kush – will, before long, peak and then go into decline.
Even under the most optimistic climate scenario, runoff from Asian glaciers is expected to peak before mid-century, and glacier mass will shrink by about 46% by 2100. Some analysts see water competition between India and Pakistan as a major cause of the repeated conflicts in Kashmir. But unless a new Indus waters treaty is struck, taking falling supplies into account, this fighting could be a mere prelude for something much worse.
There’s a widespread belief that these problems can be solved simply by enhancing the efficiency of irrigation: huge amounts of water are wasted in agriculture. So let me introduce you to the irrigation efficiency paradox. As better techniques ensure that less water is required to grow a given volume of crops, irrigation becomes cheaper. As a result, it attracts more investment, encourages farmers to grow thirstier, more profitable plants, and expands across a wider area. This is what happened, for instance, in the Guadiana river basin in Spain, where a €600m investment to reduce water use by improving the efficiency of irrigation has instead increased it.
You can overcome the paradox through regulation: laws to limit both total and individual water consumption. But governments prefer to rely on technology alone. Without political and economic measures, it doesn’t work.
Nor are other technofixes likely to solve the problem. Governments are planning massive engineering schemes to pipe water from one place to another. But climate breakdown and rising demand ensure that many of the donor regions are also likely to run dry. Water from desalination plants typically costs five or 10 times as much as water from the ground or the sky, while the process requires masses of energy and generates great volumes of toxic brine.
Above all, we need to change our diets. Those of us with dietary choice (in other words, the richer half of the world’s population) should seek to minimise the water footprint of our food. With apologies for harping on about it, this is yet another reason to switch to an animal-free diet, which reduces both total crop demand and, in most cases, water use. The water demand of certain plant products, especially almonds and pistachios in California, has become a major theme in the culture wars, as rightwing influencers attack plant-based diets. But, excessive as the watering of these crops is, more than twice as much irrigation water is used in California to grow forage plants to feed livestock, especially dairy cows. Dairy milk has much higher water demand even than the worst alternative (almond milk), and is astronomically higher than the best alternatives, such as oat or soya milk.
This is not to give all plant products a free pass: horticulture can make massive demands on water supplies. Even within a plant-based diet, we should be switching from some grains, vegetables and fruit to others. Governments and retailers should help us through a combination of stronger rules and informative labelling.
Instead, they do the opposite. Last month, at the behest of the EU’s agricultural commissioner, Janusz Wojciechowski, the European Commission deleted from its new climate plan the call to incentivise “diversified” (animal-free) protein sources. Regulatory capture is never stronger than in the food and farming sector.
I hate to pile yet more on to you, but some of us have to try to counter the endless bias against relevance in politics and most of the media. This is yet another of those massive neglected issues, any one of which could be fatal to peace and prosperity on a habitable planet. Somehow, we need to recover our focus.
Learning from Dogs 