EcoGeek's Hank Green has a post up regarding Earth Hour, a follow-up to Sydney, Australia's "lights out" event last year. Organized by the World Wildlife Fund, the aim is awareness, plain and simple.

And this year, they're going global.

So on March 29th, whenever 8pm rolls around, over 350 cities in 35 countries, millions of individuals, the Sears Tower, the Golden Gate Bridge, and 2,100 corporations including HP, Coca Cola and McDonald's, are all turning off their lights.

And candles are a no-no (comparatively more CO2 is released) and the fact that many of us live in big wooden boxes, for the most part.

As of this writing, 263064 folks have signed up (+1 for me). You can sign up here.