The video features Letterman rhapsodizing about the virtues of clean energy while caressing an array of solar panels.
Ive created, excuse the expression, kind of a love affair with this, he says serenely.
Theres something very appealing about this, and its smooth.
Look at it: I can touch it and its safe.
I put my head right there on it.
Letterman even leans down and plants a kiss on one of the panels, with shocking results.
(Watch the promo above.)
Season 2 ofYears of Living Dangerouslypremieres Oct. 30 on National Geographic.
Additional hosts include Arnold Schwarzenegger, America Ferrera, Cecily Strong, and Aasif Mandvi.
