Hey, remember when David Letterman was a comedian? You might not be old enough. Over the years, he’s transformed from a bitter and miserable comic to a bitter and miserable left-wing scold. (Not that the two are mutually exclusive, but he’s pretty much given up on the first part.) And now, he has become a bitter and miserable science expert:

After condemning the greedy oil companies that are despoiling the planet, Letterman jetted off to St. Barts.

With an intern.

(Hat tip: Ecorazzi)