É isto o aquecimento global?

"Winter storm" causes Dobbs to ask: "What's that global warming deal?"
Summary: Lou Dobbs said during the introduction of his CNN show: "And tonight, unusual winter storms are dumping snow in unusual places across Western states, and a huge snowstorm is headed toward the Northeast. This is global warming?" During his segment on the issue, Dobbs hosted Heartland Institute senior fellow and science director Jay Lehr without disclosing that Heartland receives funding from the energy industry and without challenging Lehr's assertions that "[t]he last 10 years have been quite cool" and that "the sun" -- rather than humans -- is responsible for recent climate change.