The World Wildlife Fund sponsored
Earth Hour 2008 is tonight from 8 to 9 local time. It started last year when 2.2 million people in Sydney turned off their lights for an hour, causing a drop in energy consumption of 10.2% in the city (equivalent to taking 48,000 cars off the road). It appears
Chicago,
Atlanta,
Phoenix, and
San Francisco as well as a number of
others are on the list of participants for the US.