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Supernova shrapnel found in ancient bacteria is evidence for life from non-living chemicals

2013-05-09 16:22:14| Extremetech

Researchers have found iron formed in a nearby stellar explosion incorporated into living organisms.

Ancient climate questions could improve today's climate predictions

2013-04-03 20:28:00| Climate Ark Climate Change & Global Warming Newsfeed

ScienceDaily: About 4 to 5 million years ago, the Earth was warmer than today. Now that greenhouse gas pollution has the planet's temperature rising again, researchers want to know more about why this early Pliocene period was so warm, with the hopes of improving future climate predictions. A new study in the journal Nature concludes that it is difficult to model the exact conditions behind the pattern of warming in the early Pliocene. None of the proposed mechanisms -- from high carbon dioxide levels to changes...

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Ancient pool of warm water questions current climate models

2013-04-03 20:28:00| Climate Ark Climate Change & Global Warming Newsfeed

ScienceDaily: A huge pool of warm water that stretched out from Indonesia over to Africa and South America four million years ago suggests climate models might be too conservative in forecasting tropical changes. Present in the Pliocene era, this giant mass of water would have dramatically altered rainfall in the tropics, possibly even removing the monsoon. Its decay and the consequential drying of East Africa may have been a factor in Hominid evolution. Published in Nature today, the missing data for this...

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Inner Earth Could Have Caused Ancient Climate Change

2013-03-19 03:19:00| Climate Ark Climate Change & Global Warming Newsfeed

RedOrbit: Researchers wrote in a newspaper published by the American Geophysical Union that Earths interior cycles have contributed to long-term sea-level rises and climate change. New York University and Ottawas Carleton University scientists say activity below the earths surface has played a role before in ancient rises in sea levels and global warming. Although it may seem like welcoming news for climate change skeptics, the authors point out these changes took place in periods ranging from 60 million...

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