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San Francisco, Calif — Arctic sea ice shrank drastically this summer, reaching a record low, largely because warm ocean currents ate away at the base of the ice sheet, new research says. The arctic ice cap melted at an unprecedented rate in mid-2007, losing an area of ice the size of the state of Alaska, US scientists said at a conference this week.

“The average rate of loss of sea ice every summer year to year up to 2006 was equal to an area the size of West Virginia,” or about 62,800 square kilometers (24,250 square miles), said Michael Steele, the senior oceanographer at the University of Washington in Seattle.

However the decrease in ice between 2006 and 2007 “was almost equivalent to the area of Alaska,” or some 1.7 million kilometers (more than 663,000 square miles), Steele further said.

“It was a huge retreat,” said Steele, one of the researchers who discussed the subject at the annual American Geophysical Union (AGU) conference in San Francisco, California.

At the fall meeting of the American Geophysical Union (AGU) in San Francisco, some scientists argued yesterday that the end of the perennial ice is near.

“If this trend persists, the Arctic would be ice-free [in the summer] by 2013,” said Wieslaw Maslowski of the Naval Postgraduate School in Monterey, California. The researchers told a meeting of the American Geophysical Union that some of the observations had been astonishing.

“The further you go down this path, the harder it is to get back,” observed Don Perovich from the US Army Cold Regions Research and Engineering Laboratory. “Things could come back, but basically it’s the fourth quarter and we’re down two touchdowns,” he said, using an analogy from American football.

The big thin
The extent of the sea ice cover fell to a record minimum in September of 4.13 million sq km, beating the previous low mark, set in 2005, by 23%. This was well publicised at the time, but some of the other “Arctic numbers” have not been so widely reported. Scientists say they demonstrate the step changes in environmental conditions in the northern polar region.

Warmth from below
A big driver behind the melt is the current warmth of the waters in the Arctic. In the summer of 2007, Arctic Ocean surface temperatures hit new maximums.

In waters just north of the Chukchi Sea (above Alaska and Eastern Siberia), sea-surface temperatures (SSTs) were 3.5C warmer than the historical average and 1.5C warmer than the historical maximum. SSTs of 4C were recorded.

This warming was probably the result of having increasing amounts of open water that readily absorb the sun’s rays, a phenomenon known as the ice-albedo feedback: less ice means less reflection and more absorption, leading to more warming and more melting.

“Water that is now circulating just 200 meters below the main ice pack is now significantly warmer than it was just five years ago,” said John Walsh of the University of Alaska, Fairbanks.

New research shows that carbon dioxide, one gas that traps heat in the atmosphere, can be captured as it leaves coal-burning power plants and then permanently sequestered in rock formations thousands of feet below the Earth’s surface.

How Much Time Is Left?
When asked how long the perennial ice might last, many researchers here shrugged their shoulders.

A report from the Intergovernmental Panel on Climate Change released in February predicts that the summer sea ice may disappear early in the next century.

More at National Snow and Ice Data Center, BBC News.

September 9, 2007, sea ice extent compared to animation of Septembers 1979 to 2006 

BALI, Indonesia — Dec 16, `07 — A UN Climate Change Conference adopted a plan to negotiate a new global warming pact on Saturday, Dec 15, after the United States suddenly reversed its opposition to a call by developing nations for technological help to battle rising temperatures.

The adoption came after marathon negotiations overnight, which first settled a battle between Europe and the U.S. over whether the document should mention specific goals for rich countries’ obligations to cut greenhouse gas emissions.

The agreement launches a two-year negotiating process - the “Bali roadmap” - aiming to secure a binding deal at the 2009 UN summit in Denmark.

European and U.S. envoys dueled into the final hours of the two-week meeting over the EU’s proposal that the Bali mandate suggest an ambitious goal for cutting the emissions of industrial nations_ by 25 to 40 percent below 1990 levels by 2020.

EU Welcomes Agreement

European Commission President José Manuel Barroso: “There is only one planet. Together, developed and developing countries can reach success.”

The European Union welcomes the agreement reached at the UN climate change conference in Bali to start formal negotiations on a climate regime for the post-2012 period and on a ‘Bali Roadmap’ that sets out an agenda for these negotiations.

The conference set an end-2009 deadline for completing the negotiations to allow time for governments to ratify and implement the future climate agreement by the end of 2012, when the Kyoto Protocol’s first commitment period ends.

The decision explicitly acknowledges the findings of the recent scientific assessment by the UN Intergovernmental Panel on Climate Change (IPCC) and recognises that deep cuts in global emissions of greenhouse gases will be required to prevent global warming from reaching dangerous levels.

The conference also took important decisions on several other issues, including launching demonstration projects to reduce deforestation, finalising arrangements for a fund to help developing countries adapt to the impacts of climate change, and scaling up financing for transfer of technology to developing countries.

The Bali Roadmap

The conference agreed to launch formal negotiations among the 192 parties to the UN Framework Convention on Climate Change (UNFCCC) on action up to and beyond 2012. These formal negotiations replace a process of informal dialogue that has taken place over the past two years. They will involve the United States, which is a Party to the UNFCCC but not the Kyoto Protocol.

The decision to launch negotiations sets out a ‘roadmap’ to guide them which includes the key building blocks of a future agreement. These are: enhanced mitigation of climate change by limiting or reducing emissions; adaptation to climate change; action on technology development and transfer; and scaling up of finance and investment to support mitigation and adaptation. Four negotiating sessions are scheduled in 2008, starting in March or April.

The decision explicitly acknowledges the findings of the IPCC’s recent Fourth Assessment Report (AR4), emphasises the urgency of addressing climate change expressed in the report and recognises that deep cuts in global emissions will be required to reach the Convention’s objective of preventing dangerous levels of climate change.

In parallel with the negotiations under the climate change Convention, the 176 parties to the Kyoto Protocol will continue negotiations already under way on new post-2012 emissions targets for developed countries that are in the Protocol. For this negotiating ‘track’ the Bali conference agreed on an intensive work schedule for 2008 to accelerate progress.

A review of the Protocol at the next UN climate conference, in December 2008, will help to inform these negotiations on future commitments by developed countries.

The negotiations under both ‘tracks’ – Convention and Protocol - will be completed at the UN climate change conference to be held at the end of 2009 in Copenhagen. The EU and many other Parties insisted on this simultaneous deadline to ensure a coherent result.

More at UN Bali Reports,  EU.

BERKELEY, Calif — In the middle of the South Pacific, about 12 miles west of Tahiti, is a tropical island that soon will emerge as a model ecosystem, thanks to the efforts of a U.S.-French research team led by University of California, Berkeley, biologists.

Moorea, home of the UC Berkeley Richard B. Gump South Pacific Research Station and France’s Centre de Recherches Insulaires et Observatoire de l’Environnement (CRIOBE), will be the site of an ambitious project to create a comprehensive inventory of all non-microbial life on the island. Supported by a new $5.2 million grant from the Gordon and Betty Moore Foundation, the Moorea Biocode Project over the next three years will send researchers climbing up jagged peaks, trekking through lush forests and diving down to coral reefs to sample the French Polynesian island’s animal and plant life.

“This is the first effort to catalog and barcode an entire tropical ecosystem, from the bottom of the ocean to the top of the mountains,” said George Roderick, UC Berkeley professor of environmental science, policy and management, curator of the campus’s Essig Museum of Entomology and co-principal investigator of the project.

“We’re constructing a library of genetic markers and physical identifiers for every species of plant, animal and fungi on the island, then making that database publicly available as a resource for ecologists and evolutionary biologists around the world,” he said. Roderick is a former director of the Gump Station, where the National Science Foundation has established one of its 26 Long Term Ecological Research sites (the Moorea Coral Reef LTER).

The work will expand upon a 2005 pilot biocode project at Moorea, also funded by the Moore Foundation, which tested the feasibility of such a large undertaking. That project was limited to genetic barcoding of the fishes, geckos and selected insects.

In the spirit of leaving no stone unturned, larvae and contents of animals’ guts will be fair game in the full project. “We’ll check the gut contents of a gecko, spider or fish to find out what it’s eating,” said Chris Meyer, who managed the pilot project while he was a researcher at UC Berkeley.

There are an estimated 5,000 plant, animal and fungal species on Moorea, although that number may change as cryptic communities and organisms are sampled and genetic markers reveal novel species. “I’d be disappointed if we don’t hit at least 10,000 species,” said Meyer.

The number of species on the 51-square-mile island of Moorea is small compared with that on larger islands and continents. In California, for example, the number of insect species alone tops 30,000. Yet, the researchers say Moorea provides the right balance of being small enough to be studied manageably while being sufficiently complex to reliably serve as a microcosm of the challenges faced in larger ecosystems.

At the end of the three-year project, the Moorea Biocode Project will have sequenced a whole tropical ecosystem. “Like the Human Genome Project, however, this unprecedented accomplishment is, in some ways, merely a necessary first step,” said Davies. “Its goal is to accelerate progress on the larger questions: how to maintain a healthy ecosystem and what to do when things go wrong.” More at UC Berkeley, Berkeley.edu/Biocode. Photo Credits: UC Berkeley.

Cataloging an ecosystem
UC Berkeley biologist George Roderick talks about working on the South Pacific island of Moorea and an ambitious project to create a genetic inventory of all non-microbial life in the island’s ecosystem. (2:06 min. Flash video)

IRVINE, Calif — Dec 05, ‘07 — The herbal extract of a yellow-flowered mountain plant indigenous to the Arctic regions of Europe and Asia increased the lifespan of fruit fly populations, according to a University of California, Irvine study.

Flies that ate a diet rich with Rhodiola rosea, an herbal supplement long used for its purported stress-relief effects, lived on an average of 10 percent longer than fly groups that didn’t eat the herb. Study results appear in the online version of Rejuvenation Research.

“Although this study does not present clinical evidence that Rhodiola can extend human life, the finding that it does extend the lifespan of a model organism, combined with its known health benefits in humans, make this herb a promising candidate for further anti-aging research,” said Mahtab Jafari, a professor of pharmaceutical sciences and study leader. “Our results reveal that Rhodiola is worthy of continued study, and we are now investigating why this herb works to increase lifespan.”

In their study, the UC Irvine researchers fed adult fruit fly populations diets supplemented at different dose levels with four herbs known for their anti-aging properties. The herbs were mixed into a yeast paste, which adult flies ate for the duration of their lives. Three of the herbs – known by their Chinese names as Lu Duo Wei, Bu Zhong Yi Qi Tang and San Zhi Pian – had no effect on fruit fly longevity, while Rhodiola was found to significantly reduce mortality. On average, Rhodiola increased survival 3.5 days in males and 3.2 days in females.

Rhodiola rosea, also known as the golden root, grows in cold climates at high altitudes and has been used by Scandinavians and Russians for centuries for its anti-stress qualities. The herb is thought to have anti-oxidative properties and has been widely studied.

Soviet researchers have been studying Rhodiola since the 1940s on athletes and cosmonauts, finding that the herb boosts the body’s response to stress. And earlier this year, a Nordic Journal of Psychiatry study on people with mild-to-moderate depression showed that patients taking a Rhodiola extract called SHR-5 reported fewer symptoms of depression than did those who took a placebo.

Jafari said she is evaluating the molecular mechanism of Rhodiola by measuring its impact on energy metabolism, oxidative stress and anti-oxidant defenses in fruit flies. She is also beginning studies in mice and in mouse and human cell cultures. These latter studies should help understand the benefits of Rhodiola seen in human trials. More at University of California, Irvine.

Dec 04, ‘07 — In support of its upcoming special, Dino Death Trap, National Geographic has launched Dino Central Park.  Featuring a hidden “webcam” in Central Park , the website allows users to scare the pants off of unsuspecting New Yorkers walking through the park by controlling a virtual Dino hidden in the bushes.

Dino Death Trap , premiering Sunday December 9^th at 8:00 pm, digs up brand new species of dinosaurs from a lost age of the early Jurassic. Be there and join National Geographic as they travel to western China , deep in the dry and desolate Junggar Basin , when the graves never-before-seen Dinos are uncovered.

Some scientists are calling it “The Pit of Death”, others, “Dinosaur Pompeii”.  Envision dinosaur corpses stacked one on top of each other, piled four and five high.  A bizarre T. Rex ancestor, a Triceratops ancestor, an ancient Crocodilian, and nearly 40 more different species dating back 160 million years ago are uncovered in front of National Geographic cameras.

On Dino Death Trap you can follow a team of paleontologists, led by Dr. Jim Clark, of George Washington University , and Dr. Xu Xing, of the Chinese Academy of Sciences as they unearth answers to a virtual black hole in dinosaur evolution.  Watch as the bones are examined, reconstructed and brought back to life, using high resolution CGI, and slowly probe the mystery of who these dinosaurs were, how they died and what they can tell us about the Lost Age of the Dinosaurs.

Want more Dinosaurs?  From DinoCentralPark, head over to NGCDinos where you’ll find 3-D Dino renderings, a fossil hunt game, a Dino mummy timeline, and six video previews of the show.

Dino Death Trap Previews, Dino Central park, NGCDinos. [ Thanks ‘Brian Ries’ ]

Dec 03, ‘07 — Chimpanzees have an extraordinary photographic memory that is far superior to ours, research suggests. Young chimps outperformed university students in memory tests devised by Japanese scientists.

The research, published in Current Biology, suggests we may have under-estimated the intelligence of our closest living relatives. Until now, it had always been assumed that chimps could not match humans in memory and other mental skills.

“There are still many people, including many biologists, who believe that humans are superior to chimpanzees in all cognitive functions,” said lead researcher  of Kyoto University.

“No one can imagine that chimpanzees - young chimpanzees at the age of 5 - have a better performance in a memory task than humans,” he said in a statement.

Matsuzawa, a pioneer in studying the mental abilities of chimps, said even he was surprised. He and colleague Sana Inoue report the results in Tuesday’s issue of the journal Current Biology.

One memory test included three 5-year-old chimps who’d been taught the order of Arabic numerals 1 through 9, and a dozen human volunteers.

They saw nine numbers displayed on a computer screen. When they touched the first number, the other eight turned into white squares. The test was to touch all these squares in the order of the numbers that used to be there.

Results showed that the chimps, while no more accurate than the people, could do this faster. One chimp, Ayumu, did the best. Researchers included him and nine college students in a second test.

This time, five numbers flashed on the screen only briefly before they were replaced by white squares. The challenge, again, was to touch these squares in the proper sequence.

When the numbers were displayed for about seven-tenths of a second, Ayumu and the college students were both able to do this correctly about 80 percent of the time.

But when the numbers were displayed for just four-tenths or two-tenths of a second, the chimp was the champ. The briefer of those times is too short to allow a look around the screen, and in those tests Ayumu still scored about 80 percent, while humans plunged to 40 percent.

That indicates Ayumu was better at taking in the whole pattern of numbers at a glance, the researchers wrote.

Dr Lisa Parr, who works with chimps at the Yerkes Primate Center at Emory University in Atlanta, US, described the research as “ground-breaking”. She said their importance of these primates for understanding the skills necessary for the evolution of modern humans was unparalleled.

“They are our closest living relatives and thus are in a unique position to inform us about our evolutionary heritage,” said Dr Parr.

“These studies tell us that elaborate short-term memory skills may have had a much more salient function in early humans than is present in modern humans, perhaps due to our increasing reliance on language-based memory skills.” More at BBC News.

Dec 03, ‘07 — Fossil hunters have uncovered the remains of a dinosaur that has much of its soft tissue still intact. Skin, muscle, tendons and other tissue that rarely survive fossilisation have all been preserved in the specimen unearthed in North Dakota, US.

The 67 million-year-old dinosaur is one of the duck-billed hadrosaur group. The preservation allowed scientists to estimate that it was more muscular than thought, perhaps giving it the ability to outrun predators like T. rex.

While they call it a mummy, the dinosaur is not really preserved like King Tut was. The dinosaur body has been fossilized into stone. Unlike the collections of bones found in museums, this hadrosaur came complete with skin, ligaments, tendons and possibly some internal organs, according to researchers.

The study is not yet complete, but scientists have concluded that Hadrosaurs were bigger - 3 1/2 tons and up to 40 feet long - and stronger than had been known, were quick and flexible and had skin with scales that may have been striped.

“Oh, the skin is wonderful,” paleontologist Phillip Manning of Manchester University in England rhapsodized, admitting to a “glazed look in my eye.”

“It’s unbelievable when you look at it for the first time,” he said in a telephone interview. “There is depth and structure to the skin. The level of detail expressed in the skin is just breathtaking.”

The fossil was found in 1999 and is now nicknamed Dakota. It is being analysed in the world’s largest CT scanner, operated by the Boeing corporation.

The machine usually is used for space shuttle engines and other large objects. Researchers hope the technology will help them learn more about the fossilised insides of the creature.

The reptile had no chest cavity, suggesting it had been partially eaten by predators before being “mummified” in unusual conditions: acidic, waterlogged sediments collected around the dinosaur, triggering the rapid deposit of minerals and trapping organic molecules before they decayed.

Dakota was discovered by Tyler Lyson, then a teenager who liked hunting for fossils on his family ranch. Lyson, who is currently working on his doctorate degree in paleontology at Yale University, founded the Marmarth Research Foundation, an organization dedicated to the excavation, preservation and study of dinosaurs. More at National Geographic, BBC News.

An anaconda snake measuring over six meters and weighing 440 pound is captured in the backyard of an abandoned house in Parana, Brazil, Reuters reported on Nov 30.

Veterinarians said it was rare to find such a large anaconda in the Parana area.