Howard Bloom: Climate Change Is Nature's Way - WSJ.com

We've been deceived by a stroke of luck. In the two million years during which we climbed from stone-tool wielding Homo erectus with sloping brows to high-foreheaded Homo urbanis, man the inventor of the city, we underwent 60 glaciations, 60 ice ages. And in the 120,000 years since we emerged in our current physiological shape as Homo sapiens, we've lived through 20 sudden global warmings. In most of those, temperatures have shot up by as much as 18 degrees within a mere 20 years.

All this took place without smokestacks and tailpipes. All this took place without the desecration of nature by modern man.