Last Updated: Tuesday, November 26, 2013, 11:41
Researchers has revealed that rain as acidic as undiluted lemon juice may have contributed to massive die-offs on land millions of years ago.
Last Updated: Sunday, February 5, 2012, 19:06
About 252 mn years ago, at the end of the Permian period, Earth almost became a lifeless planet.
Last Updated: Friday, November 18, 2011, 09:54
During the world`s biggest mass extinction, Earth seemed pretty close to a description of hell created by massive volcanic eruptions.
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