Earth Hour, a small way to make a big differerence

Has anyone talked about Earth Hour yet? On Saturday at 9 PM Eastern Time, a number of people all around the world are turning out unnecessary lights, to spread awareness of the global warming and decisions about energy use.
It started last year in Sydney. Two million businesses and households participated. This year it's "going global."
Earth Hour is intended the world how much of an impact an individual has on the environment.
It's something we may wish to share with our students, how small decisions can really add up...
Earth Hour Supporter Statistics