Monday, October 22, 2012

Instant egghead

There's a lengthy critique of this little video at PZ Meyers Pharyngula blog. I'm inclined to agree with him.

My biggest problem with the video, though, is in Guterl’s suggestion that our changing the atmosphere’s composition — referring to the end-Permian extinction, as well as the “Great Oxygenation” of the Paleoproterozoic — is what’s got scientists worried about mass extinction these days, given that we happen to be adding CO2 to the atmosphere faster than the Siberian Traps did 252 million years ago. And scientists are indeed worried about the effects of climate change on biodiversity.
But scientists working on studying and preserving biodiversity — which after all is the positive way of saying “not having a mass extinction’ — are worried about a whole lot more than climate change. We could completely solve the atmospheric CO2overburden on Tuesday and still be faced with an extinction crisis as we plow up grasslands, cut down forests, bottom-trawl the oceans, and build new sprawling cities on land that once supported wildlife.

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