David Letterman, Olivia Munn to appear in Season 2 of National Geographic's 'Years of Living Dangerously'
Thursday, September 17, 2015 - 20:30
in Earth & Climate
Karen ButlerWASHINGTON, Sept. 17 (UPI) -- David Letterman, Olivia Munn, Jack Black and James Cameron are to appear on Season 2 of the climate change-themed, docu-series "Years of Living Dangerously."