Earth Day started in Sydney last year with an idea that if we simply turned our lights off for one hour the overall effects could be substantial. Of course, it was a symbolic gesture more than anything else, but on 31 March 2007, 2.2 million people and 2100 Sydney businesses turned off their lights for one hour - Earth Hour. During this single hour, the collective effort of turning off the lights reduced Sydney’s energy consumption by 10.2%, which is the equivalent effect of taking 48,000 cars off the road. What started as a grassroots community idea quickly took hold among the corporate and government sectors, proving that a simple idea like turning the power off for an hour can gather enough momentum to make a noticable difference and raise awareness of the problems our planet faces.
This year, people around the world are being encouraged to join Sydney for Earth Hour on Saturday, March 29th. Already, 25 cities around the world have agreed to participate, including San Francisco, Chicago, Denver, and Miami. My students and I will be encouraging our school community to join millions of people around the world who will be reducing their "carbon footprint" for one hour, starting at 8:00 p.m. local time. Care to join us?
Why don't you start by watching this video about last year's Earth Hour in Sydney. And then click on the link below which will take you to the Earth Hour 2008 website where you can sign up and participate.