Sydney among first cities to switch off lights for Earth Hour

Cities on Australia's east coast were among the first in the world to turn lights out on Saturday for the 10th annual Earth Hour, a global lights out event designed to highlight the threat from climate change. The Sydney Opera House, normally brightly lit, switched off its lights at 8:30 p.m. (0930 GMT), along with the Sydney Harbour Bridge and dozens more buildings across the city and Australia. This year's theme is a celebration of "Places We Love," such as beaches, forests, reefs, snow-capped