PBS NewsHour

John Hockenberry on How Skeptics Changed the Politics of...

Clip: 10/23/2012 | 4m 18s

NewsHour's Hari Sreenivasan talks to John Hockenberry about Frontline documentary "Climate of Doubt," which examines how the political climate around global warming has changed in the last four years.

Aired: 10/23/12

Rating: NR

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