At a pink limestone quarry in Sweden, finding meteorite is no big deal—workers have found 101 of them in the past 20 years. But a new space rock discovery has scientists scratching their heads. The meteorite is of a class that's never before been seen, and it may hold a key to the explosion of life on Earth nearly 500 million years ago.
from Gizmodo http://ift.tt/1qfxk3i
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