Before we caused global warming, we generated global cooling.
"When humans migrated to the Americas roughly 13 thousand years ago, they hunted megafauna like mammoths to extinction. The result? Scientists say that without giant animal farts, there was a massive depletion in atmospheric methane, possibly causing an ice age."
Tuesday, May 25, 2010
Mammoth farts could have stopped the ice age 12,000 years ago
Mammoth farts could have stopped the ice age 12,000 years ago
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