Video: The Human Role in Global Climate Change

Produced by WPSU (a PBS affiliate) and the Rock Ethics Institute, this short film reviews the current state of scientific understanding about the human influences on climate change through straightforward explanations by top geological, meteorological, and geographic scientists working on climate related research at The Pennsylvania State University. The film features professors Richard Alley, Katherine Freeman, Michael Mann, James Kasting, Petra Tschakert, Klaus Keller, and Nancy Tuana.