BIG Problems – Page 78

Satellites See Unprecedented Greenland Ice Sheet Surface Melt
By the Editor on July 24, 2012
For several days in July, Greenland’s surface ice cover melted over a larger area than at any time in...
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And the Race Is on: Unlocking the Secrets of Aging
By the Editor on July 24, 2012
A race to unlock genetic clues behind living to 100 is set to begin next year, after a US...
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Sex Drives Chromosome Evolution
By the Editor on July 24, 2012
Given the dramatic difference in the size and sequence of the human X and Y chromosomes, it’s hard to...
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Uncovering the World’s Unseen Science
By the Editor on July 24, 2012
Global comparisons of scientific output are commonplace. As non-experts, policymakers and administrators must rely on indexes of impact and...
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Polar Bears, Brown Bears Interbreed to Cope With Climate Change
By the Editor on July 24, 2012
Polar and brown bears diverged between 4 million and 5 million years ago, but they continued to interbreed when...
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Rethinking Modern Human Origins
By the Editor on July 23, 2012
It’s assumed that modern humans, Homo sapiens, originated in Africa sometime between 200,000 and 100,000 years ago. But paleoanthropologist...
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Global Warming’s Terrifying New Math
By the Editor on July 23, 2012
Three simple numbers that add up to global catastrophe - and that make clear who the real enemy is
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Modern Humans Greater Threat to Neanderthals
By the Editor on July 23, 2012
Modern humans were likely a greater threat to the Neanderthals than major natural events like extreme cold weather or...
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Bees Find Fountain of Youth
By the Editor on July 23, 2012
By switching back to the more social, less active jobs of their youth, some honeybees regained the ability to...
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Science at the Olympics: Team Science
By the Editor on July 23, 2012
The Olympics is a vast experiment in human performance, sport technology and global travel. Nature meets some of the...
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