Saturday: Lights Off Worldwide for Earth Hour

The Golden Gate Bridge after lights out, during Earth Hour 2008 in San Fransisco, Calif.
(Image credit: © John Storey / WWF-US)

Cities in 92 countries around the world prepare to shut off their lights for one hour tomorrow in observance of Earth Hour, an annual event geared at showing support for taking action on climate change issues.

During Earth Hour, people around the world are asked to turn off their lights for an hour at 8:30 p.m. local time on March 27. This year the event has topped its participation figure from last year, which was 88 countries.

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