In its newest special "Behind Obama's Green Agenda," Fox News turned to right-wing radio host Mark Levin to explain global warming, rather than quoting a single scientist. The vast majority of scientists say that our increased emissions of greenhouse gases are causing global warming, but Levin declared that we do not need to worry about these emissions because "carbon dioxide is what we exhale, carbon dioxide is necessary for plants."

Fox identified Levin as the co-founder of the Landmark Legal Foundation and suggested he is an expert on the Environmental Protection Agency, which he said "has many of the attributes of the old Soviet system." But Levin is better known for his rants as a right-wing radio talk show host than for his expertise on environmental issues.

The host of the hourlong special, Bret Baier, is often viewed as one of the more credible news anchors at Fox News. But consistent with previous directions from Fox News' Washington Managing Editor, Baier cast doubt on the science of climate change: