Calculate your footprint
Earth Hour is a perfect time to find out what your environmental footprint is using WWF's ecological footprint calcul...
and counting till
Earth Hour!
Earth Hour!
Earth Hour & WWF
Earth Hour History
Earth Hour started in Sydney, Australia in 2007. Approximately 2.2 million people and 2,100 businesses took part in t...
Sign up & support
To register that you will turn off the lights at 8.30 Saturday, 27 March 2010
