Overcome obstacles to effective climate policy?

Overcome obstacles to effective climate policy?

By PBS NewsHour
Unabridged
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The latest UN report on climate change suggests ways to potentially ward off the worst impacts of rising emissions. But these scenarios come with real costs, and have faced political opposition as well as reluctance from the American public. Judy Woodruff learns more from Robert Stavins of the Harvard Kennedy School of Government and Maura Cowley of the Energy Action Coalition.