National Geographic: What could be funny about climate change? We'll see. In his first gig since leaving CBS's Late Show, David Letterman will travel to India to explore the subject for the documentary TV series Years of Living Dangerously, interviewing the prime minister and looking at the nation's ambitious plans to expand solar power.
Other celebrities, including Arnold Schwarzenegger, Jack Black, and Olivia Munn will join the Emmy-award-winning series' second season, set to air on the National Geographic Channel...