The first lights-out will be in the Chatham Island off the coast of New Zealand. From there, the wave of darkened buildings, streets, and monuments will ripple through all 25 time zones. Even the Eiffel Tower will go dark.
The more participants there are, the bigger the impact will be. So get ready to power down!
Learn more about Earth Hour.
Read about last year's Earth Hour on National Geographic News.
Get more power saving tips on National Geographic Kids.









Participate, participate, participate!
I have participated.
My school has a club called the Ecology Club and we made posters about Reuse a Shoe and Earth Hour. My school like many others are trying to go "green". I know this is late to post but I just wanted to say.