Al Gore : ‘There’s a lot of opportunity in this crisis’

  Former Vice President and climate crusader Al Gore appeared on the Late Show with David Letterman during the January 29 broadcast.

Letterman sounded pessimistic about the future of the planet, declaring, "With the drought coming on, we are nothing but screwed."

Gore urged Letterman not to despair about Gore-bull warming and energy issues: 'You sound hopeless Dave. There's a lot of opportunity in this crisis."