The climate changes for a number of reasons, not just a c or two. There are other greenhouse gases, methane nitrous oxide being the most important ones. The climate does vary on its own, and you've got to somehow take that into account. Even for a given amount of greenhouse gases and air sauts, the models respond in very different ways. Some warm by only one degree when you double carbon dioxide, one and a half,. Others warm by five or six degrees.
According to Steven Koonin, when it comes to climate change, the media, politicians, and other prominent voices have declared that “the science is settled.” Koonin avers that the long game of telephone from research to reports, to the popular media, is corrupted by misunderstanding and misinformation. Koonin says that core questions about the way the climate is responding to our influence, and what the impacts will be remain largely unanswered. Koonin acknowledges that the climate is changing, and he claims the whyand how aren’t as clear as you’ve probably been led to believe, and what the impacts will be remain largely unanswered.
In this engaging conversation Michael Shermer challenges Dr. Koonin with many of the most common critiques of his book, Unsettled: What Climate Science Tells Us, What It Doesn’t, and Why It Matters, and Steven Koonin responds by drawing upon his decades of experience — including as a top science advisor to the Obama administration.