Tonight from 8-9PM is "Earth Hour", when people across the globe will be turning off unnecessary lights and appliances in a symbolic show of strength in the fight against global warming.
Obviously we need a lot more than one dark hour to solve global warming, but it is impressive to see the lengths to which the City of Chicago and its partners are going to drive participation tonight.
It's too bad the forecast calls for a cloudy night, it would have made for amazing stargazing. Still, those with a view of the Chicago skyline should see some dramatic images of iconic skyscrapers going dark.
Of course, people anywhere can participate, so lights out, everyone!
Earth Hour US - Earth Hour 2008