Remember when Al Gore's 2006 documentary "An Inconvenient Truth" swept through theaters and scared us all witless? Four years ago, tackling climate change was the talk of the nation.
But in 2012, the phrase barely passes the lips of lawmakers. Why has climate change gone missing? A new Frontline documentary, "Climate Of Doubt," answers that question. It airs tomorrow night on PBS.
Frontline correspondent John Hockenberry shares his report on the skeptics who’ve managed to make Americans cool to climate change.