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POPSPatterns in Mars crater floors give picture of drying lakes Rain and river water would have collected inside impact crater basins, creating lakes that may have existed for several thousand years before drying out. However, El Maarry believes that, in the northern hemisphere, some of the crater floor polygons could have been formed much more recently. “When a meteorite impacts with the martian surface, the heat can melt ice trapped beneath the martian crust and create what we call a hydrothermal system. Liquid water can fill the crater to form a lake, covered in a thick layer of ice. Even under current climatic conditions, this may take many thousands of years to disappear, finally resulting in the desiccation patterns
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POPSEarth Experiment Could Buy Precious Time Initial results suggest that the biggest cooling would occur in the polar regions, which is consistent with theory, and is exactly the place where cooling is most needed. The big advantages of this scheme are that it uses sea water spray, a naturally occurring substance, and that it can be turned off immediately if there are any undesirable consequences.
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POPSClimate trouble may be bubbling up in far north By CHARLES J. HANLEY (AP) – 13 hours ago I think the chilling comment is "They said up to 10 percent of the undersea permafrost area had melted, and it was "highly possible" that this would open the way to abrupt release of an estimated 50 billion tons of methane".
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POPSA new one even for me!! I'm still not convinced that's safer than traditional methods!! We do have a natural tendancy to overlook certain facts. :)
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POPSMedia Hype on Climate Change Is Nothing New "America in Longest Warm Spell Since 1776; Temperature Line Records a 25-year Rise" stated an article in the New York Times on March 27, 1933. The media of yesteryear was also not above injecting large amounts of fear and alarmism into their climate articles. An August 9, 1923 front page article in the Chicago Tribune declared: "Scientist Says Arctic Ice Will Wipe Out Canada." The article quoted a Yale University professor who predicted large parts of Europe and Asia would be "wiped out" and Switzerland would be "entirely obliterated." December 29, 1974 New York Times article on global cooling reported that climatologists believed "the facts of the present climate change are such that the most optimistic experts would assign near certainty to major crop failure in a decade."
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POPSTime to Change "Climate Change" The second is that we have to stop calling it climate change. Using "climate change" to describe events like this, with their devastating implications for global food security, water supplies and human settlements, is like describing a foreign invasion as an unexpected visit, or bombs as unwanted deliveries. It's a ridiculously neutral term for the biggest potential catastrophe humankind has ever encountered.
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POPSThe Methane Time Bomb "...If only 1% of permafrost carbon were to be released each year, that could double the globe's annual carbon emissions, Romanovsky notes. "We are at a tipping point for positive feedback," he warns, referring to a process in which warming spurs emissions, which in turn generate more heat, in an uncontrollable cycle."
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POPSBulls Cloned From Decade-Old Frozen Testicles This type of cloning is harder to pull off, and scientists haven't yet figured out how to replace DNA damaged by Siberian deep-freezing. But researchers are also consistently amazed at the boundaries to which artificial reproduction can be pushed. "It's still very much a long shot, but it's not out and out impossible," said George Seidel, a Colorado State University animal reproduction expert, when I talked to him in November about mammoth cloning. "It's remarkable what one can do with embryos and get away with."
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POPS"Seven New Wonders of the World" (full at source): Honey, we're shrinking the species Bigger is so 20th century. Ecologists say global warming will shrink species, as bigger creatures will have more problems losing heat. And conservationists say we need to plan now if we are going to save large species from extinction.
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POPSForget the Polar Bears -- The Climate Crisis Is About All of Us
Forget the sodding polar bears: This is about all of us. As the ice disappears, the region becomes darker, which means that it absorbs more heat. A recent paper published in Geophysical Research Letters shows that the extra warming caused by disappearing sea ice penetrates 1,500 kilometers (932 miles) inland, covering almost the entire region of continuous permafrost. Arctic permafrost contains twice as much carbon as the entire global atmosphere. It remains safe for as long as the ground stays frozen. But the melting has begun. Methane gushers are now gassing out of some places with such force that they keep the water open in Arctic lakes through the winter. The effects of melting permafrost are not incorporated into any global climate models. Runaway warming in the Arctic alone could flip the entire planet into a new climatic state. The Middle Climate could collapse faster and sooner than the grimmest forecasts proposed. Barack Obama's speech to the U.S. climate summit last wee
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POPSWoolly mammoth DNA nearly deciphered Full-sized mammoths, about 8 to 14 feet tall like elephants, became extinct about 10,000 years ago. go to source full story To obtain the DNA, scientists relied on 20 balls of mammoth hair found frozen in the Siberian permafrost. That technique - along with major improvements in genome sequencing and the still-emerging field of synthetic biology - is helping biologists envision a science-fiction future.
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POPSA Mammoth Discovery Could mammoths once again roam the earth? This article is about a year old and I've not spotted any around Atlanta yet. I'll keep an eye out.
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