Natalie Mahowald, a lead author of a U.N. report on global warming and faculty director of the environment at Cornell University’s Atkinson Center for a Sustainable Future, Jonathon Schuldt, assistant professor of communication at Cornell University and a faculty fellow at the Atkinson Center for a Sustainable Future, and Karen Pinkus, professor of Italian and comparative literature at Cornell University and faculty fellow in the Atkinson Center for a Sustainable Future, comment on what is needed to mitigate global warming.