Quote:
Originally Posted by Old Tele man
..."Mother Nature" has already done that many times over the eons: A = Glacial Cooling and B = Savannah Sizziling (wink,wink)...we just weren't around to notice it.
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Sorry, but no. Mother Nature has not dumped large amounts of fossil CO2 into the atmosphere many times over the eons. In fact, she has - as well as we can read the fossil record - done it only once. That was the Permian-Triassic extinction event:
http://en.wikipedia.org/wiki/Permian...tinction_event