Fortune: David Letterman already has plans to return to the small-screen after retiring from theLate Show.
The former late night host will travel to India for an episode of the National Geographic Channels Emmy-Award winning documentary series, Years of Living Dangerously, to address the issue of climate change.
Variety reports Lettermans episode will focus on the countrys efforts to increase its use of solar energy over the next decade. The project is the veteran hosts first since retiring earlier...