Imagine what would happen if we all did it at the same time?! By participating in Earth Hour and putting out the lights for an hour, we can reflect upon the more apparent stars in the sky and some methods for how we may reduce our energy toll.
Earth Hour, as observed in the US, will happen on March 29, 8:00PM local time.
More than just an hour–suggestions for reducing your energy consumption.
And, of related interest:
Take Action List, from StopGlobalWarming.org