Earth news

Less ice in the Arctic Ocean 6000-7000 years ago

Recent mapping of a number of raised beach ridges on the north coast of Greenland suggests that the ice cover in the Arctic Ocean was greatly reduced some 6000-7000 years ago. The Arctic Ocean may have been periodically ice ...

Oct 20, 2008
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CO2 higher today than last 2.1 million years

Researchers have reconstructed atmospheric carbon dioxide levels over the past 2.1 million years in the sharpest detail yet, shedding new light on its role in the earth's cycles of cooling and warming.

Jun 18, 2009
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