On Saturday, March 29, 2008, Earth Hour invites people around the world to turn off their lights for one hour – from 8:00pm to 9:00pm in their local time zone. On this day, cities around the world, including Copenhagen, Chicago, Melbourne, Dubai, and Tel Aviv, will hold events to acknowledge their commitment to energy conservation.

http://www.google.com/intl/en/earthhour/

You guys will probably be on the computer or watching the tube, but at least shut off your lights.

I'm going to cut down some trees today and throw garbage in the river.

Excellent. New trees will sprout which consume way more CO2 than older trees, and the garbage will kill the predators that are eating all our fish. That's more than the majority of you will do, in your entire lifetime!