In Al Gore's brand-new slideshow (premiering exclusively on TED.com), he presents evidence that the pace of climate change may be even worse than scientists were recently predicting, and challenges us to act with a sense of "generational mission" -- the kind of feeling that brought forth the civil rights movement -- to set it right. Gore's stirring presentation is followed by a Q&A in which he is asked for his verdict on the current political candidates' climate policies and on what role he himself might play in future. (Recorded March 2008 in Monterey, California. Duration: 27:54.)

Important stuff.