Related rabble.ca story:
It is one of the highest profile environmental events of the year. The lights plunged into darkness on the Eiffel Tower in Paris, Sydney's Opera House, the Kremlin in Moscow and even the world's tallest building, Dubai's 200-storey Burj Khalifa.
Last Saturday evening, organizers claimed that millions of people around the world recognized the threat to the world's environment by taking part in Earth Hour, shutting off the lights in giant buildings and in their homes.
Earth Hour has become a motherhood event in most parts of the developed world but, as with many perceived progressive activities, there are questions about how much it accomplishes and whether it is a productive event.