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View Full Version : Fossil raindrop-prints solve an ancient atmospheric mystery


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03-30-2012, 08:47 PM
http://www.cbc.ca/gfx/images/news/topstories/2012/03/30/hi-852-fossil-rain-2-6col.jpg
Marks left by falling rain in South Africa 2.7 billion years ago appear to solve a long-standing scientific mystery: Why wasn't the Earth covered in ice at that time?


More... (http://www.cbc.ca/news/technology/story/2012/03/30/science-raindrop-fossils-atmosphere.html?cmp=rss)