Earth Hour: Turn off your lights at 8:30

First there was Earth Day. Now there's Earth Hour. One hour to turn off your lights. Join with the Empire State Building, and the Petronas Towers in Kuala Lampur. Wembly Stadium's Arch, the Acropolis in Greece, and the lights on the Great Pyramids of Egypt and the Sphinx. Make a small statement about global warming this Saturday - and turn off your lights for one hour starting at 8:30 p.m.