02:02
Global Warming: Evidence and Impact
Scientist and climate change expert Michael Oppenheimer discusses the evidence confirming global warming and the expected impact, which he predicts will be enormous.
00:53
Carbon Dioxide and Climate Change
Scientist and climate change expert Michael Oppenheimer discusses research into the relationship between climate change and carbon dioxide, beginning with computer models in the late 1950's, through the analysis of ice cores over the subsequent thir...