This combo shows the lights around Sydney's Harbor and the iconic Opera House (L) taken on March 23, 2011 (top photo) and on March 26, 2011 as the city switches off its lights to mark "Earth Hour". Australia's Opera House was the first of many global landmarks to go dark on March 26 as "Earth Hour" got underway with hundreds of millions of people around the world set to switch off their lights.

 Funny cartoons of Barack Obama.