The Sydney Opera House, left, and the Harbour Bridge have their lights that usually have structures well lit at night turned off in Sydney on Saturday as part of Earth Hour. Millions of people in more than 100 countries are expected to dim the lights in what has become an annual gesture against global warming.
..."From Brazil to America, to Canada, all the way down to Australia, Japan and India - it's a really diverse set of countries taking part this year," Earth Hour executive director Andy Ridley said (click title to entry - thank you)....
A record 125 countries are taking part. (AFP: Greg Wood)
