A new scientific study has been released detailing the cyclic nature of global warming and ice ages. As a former biologist I don’t find this surprising and think its great that concrete analytical data is coming out on the subject. What I found most amazing about this article is the documented historical values of carbon dioxide gas levels calculated in the study. Even though cycles have been present over millions of years the comparative values produced by man are far outside the normal range. It’ll be interesting to see how this argument is debated in the scientific and political community.
“In an interview, Kump noted that although some skeptics have questioned whether carbon dioxide is indeed the major “driver” in any global warming scenario, the evidence is now strong that it is. For the past 400,000 years, he said, atmospheric levels of the gas have ranged naturally from 180 to 280 parts per million, while today’s “human perturbed” level has already risen to about 370 parts per million.”