From WWF title:Earth Hour

Join millions of people, thousands of private business and hundreds of cities around the globe!

This Saturday, March 29, at 8pm local time, switch off your lights for one hour and help take action against climate change.

Your simple action, combined with that of millions of others globally, will deliver a powerful message to the citizens and leaders of the world about the need for action.

from WWF earth hours


Anyone can get involved and millions are! From the President of Fiji to the residents of Santa Cruz in Bolivia, individuals around the world will be shutting the lights off in their homes and businesses.

Major participation is planned in more then 25 major cities, on six continents, including Chicago, Copenhagen, Manila, Tel Aviv, Bangkok, Dublin and Toronto while close to 400 more cities have signed up to support this event. Lights off at The Sydney Opera House, San Francisco's Golden Gate Bridge and Toronto's CN Tower will mean world-famous city skylines will disappear for an hour tomorrow while celebrities like Nelly Furtado host acoustic concerts for fans.

Find out more about what's happening in these cities or get your town or local community involved. Invite friends and family over for a "lights out dinner party" or drink a glass of wine by candlelight. If you've got kids, encourage them to play hide-and-seek or a murder mystery game in the dark!