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August 8, 2013 02:02 pm PDT
Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/JNfatNkz6lU/story01.htm
"Older than dirt" not really that old in the grand scheme ofthings
The Earth is about 4.5 billion years old. Actual dirt — that is to say, like the stuff in your backyard, not rocks that were once dirt — probably dates to about 2 million years ago.Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/JNfatNkz6lU/story01.htm
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