Earth Hour: Lights off in L.A.

L.A. Landmarks To Turn Lights Off For "Earth Hour"
Source: Mark Kolbe/Getty Images

Hundreds of Los Angeles landmarks are joining WWF's "Earth Hour," an event that hopes to shed light on the importance of energy conservation by turning out the lights. Participants cast a vote for earth by turning their light switches off and cast a vote for global warming by keeping their lights on. More>>