From 8.30 to 9.30 pm on Saturday 28 March 2009, it is hoped that a billion people will switch off their lights in an effort to convince the world’s leaders to get serious about climate change.
1180 cities and 80 countries, all around the world, have signed up to switch off, and many of the world’s most iconic buildings will be plunged into darkness as a gesture of their commitment to reduce their carbon footprint.
Nelson’s Column, the Eiffel Tower, Christ the Redeemer in Rio de Janeiro and the London Eye will all be taking part.
Members of the British political establishment, including many MPs, have lent their support to the campaign. Climate Change Minister Lord Hunt of Kings Heath, London major Boris Johnson  and Nicholas Stern  have all taken the time to explain the reasons for their support.
In the words of Archbishop Emeritus Desmond Tutu, “Earth Hour is an opportunity for every man, woman and child from all corners of the globe to come together with a united voice and make a loud and powerful statement on the issue of climate change.”
Topmost on WWF’s agenda is ensuring that governments agree on an effective plan to combat climate change at the UN climate summit in Copenhagen this December. Climate change continues to be one of the most serious challenges facing both the human race and the natural world. Campaigners say that if temperatures are not prevented from rising more than 2ºC above pre-industrial levels we will reach a tipping point, beyond which any attempts to solve the problem will be futile.