603 - Adjusting for Reality: Rethinking Goals to Address Climate Change

In the 1980s and 90s, the world came together to successfully address a major environmental problem: a growing hole in the ozone layer. So why hasn't that success translated to global collaboration to make a dent in climate change? For Earth Day, David Victor, professor at UC San Diego, talks with Stephanie Desmon about the unique problem of climate change, and some optimistic and realistic signs of progress.