On Saturday March 29th at 8pm over 200 cities around the world will participate in earth hour - a global movement symbolizing the need to take action against global warming. World Wildlife Fund is working with city governments, power companies and large corporations to raise awareness and turn off major landmarks in each of their regions. Last year 2100 corporations and over 2 million people in Sydney, Australia joined the movement resulting in a 10% energy reduction in the city.

Whether or not you believe global warming is man-made, an hour of complete darkness might be really fun. So go ahead and unplug -- take a break. Think about how many fun things you can do in the dark! :)