Stat: 51% of Americans say the U.S. is doing a very bad or somewhat bad job of addressing climate change.

Story: Amid growing public concern about rising seas, extreme weather, and disappearing biodiversity, we speak with Michael Oppenheimer, the Albert G. Milbank professor of geosciences and international affairs at Princeton University and a longtime participant in the Intergovernmental Panel on Climate Change, the United Nations body for assessing the science related to climate change. He explains the science behind the planet's changing environment, its effects on the ocean, and possible solutions to avoid "the climate danger zone."