Earth Hour is happening right now — tonight at 8:30 local time. It’s a collective action that probably 5 to 10 percent of the world’s population is participating in — shutting off their lights for one hour. It’s a way to save money on electricity and a chance to look at the night sky (weather permitting, of course).
Turning off the lights would seem to interfere with your usual activities, but since it’s only for an hour, it won’t really. If you’re like most people, there are so many things you have in mind to do that it won’t be any trouble at all to come up with an hour’s worth of things to do that don’t require lights in the evening.
To participate in Earth Hour, just turn out the lights for an hour starting at 8:30 p.m. local time. To see what this looks like in cities around the world, take a look at the pictures at the Earth Hour web site http://www.earthhour.org.