Cities around the world marked Earth Hour on Saturday by turning off lights at 8:30 p.m. local time in a call for global action on climate change. Earth Hour, spearheaded by the World Wildlife Fund, ...

Every year, millions of people worldwide turn off the lights for Earth Hour, but the movement can bring more positive effects than just saving electricity for 60 minutes. On a Saturday night every ...

The UN headquarters in New York, the pyramids of Egypt and Rio’s Christ the Redeemer statue were among top world monuments plunged into darkness for an hour Saturday to put the spotlight on climate ...

At 8:30 pm on March 29, homes, businesses and landmarks dimmed their lights for one hour as part of the eighth annual Earth Hour, a symbolic show of concern for the environment. Earth Hour 2014, ...

Earth Hour—a global phenomenon led by the World Wildlife Fund—will start at 8:30 p.m. March 27 with a flip of the switch. Individuals, organizations, businesses and state and local governments will ...

Sydney’s Opera House and Harbour Bridge plunged into darkness Saturday for the Earth Hour environmental campaign, among the first landmarks around the world to dim their lights for the event. Lights ...