Earth hour happened this weekend – where people from around the world were invited to switch off their lights for one hour – and some of the pictures from the event are phenomenal. Below are some of the best – I’ve tried to give credit to the sources but if I’ve missed anything please let me know. 

Earth Hour started in Australia and here is their capital, Canberra: 

(http://blog.enterpriseitplanet.com/green/blog/2008/04/canberra-takes-earth-hour-crown.html)

and Sydney:

(http://timblair.net/ee/images/uploads/shieldyoureyes.jpg)

Some of the world’s most famous monuments took part, such as the pyramids in Egypt:

(http://www3.signonsandiego.com/stories/2009/mar/29/earth-hour-032909/)

… the Burj El Arab in Dubai:

(http://transracial.wordpress.com/2009/03/11/get-ready-for-earth-hour-2009/)

and the CN Tower:

(http://www.wikinomics.com/blog/index.php/2008/04/02/global-citizens-love-the-earth-for-an-hour/comment-page-1/)

Even Google got in on the act: