As host of the Late Show, David Letterman made clear many times his deep concerns about climate change. Above, his interview with James Hansen.

Rolling Stone:

David Letterman has landed his first TV gig since leaving The Late Show as a correspondent on the second season of the climate change documentary series, Years of Living Dangerously, according to The Hollywood Reporter.

The show’s producers, Joel Bach and David Gelber, reached out to Letterman after noticing his particular interest in the environment during interviews with scientists on The Late Show. “He seemed to perk up when this issue came across his lap,” Bach said. “We reached out to him to see if he’d want to be part of this, and he said, ‘Absolutely.’ He said [that climate change is] something he does think about a lot.”