Millions to flick the switch for climate change

Millions of people across the globe will kill their lights for one hour this Saturday, in what organisers hope will be a resounding call for tough action on climate change. The waters of Sydney Harbour will be plunged into darkness for an hour from 8:30 pm (0930 GMT) as the iconic Opera House and Harbour Bridge dim their lights.  http://www.google.com/hostednews/afp/article/ALeqM5jwROCz-EhkO6cNuHUnNcP1hdlc9g