Every year on April 22, people across the world unite to mark Earth Day, organising events and raising awareness of environmental threats. Earth Day is celebrated with a mission of broadening, ...

Add Yahoo as a preferred source to see more of our stories on Google. The lights on the historic building at the Grand Place were switched off for one hour as part of the international "Earth Hour" ...

Earth Day returns next week for its 55th anniversary — a timely reminder that environmental and climate action is more urgent than ever. The global initiative has been held annually since 1970, when ...

CHICAGO -- From the Sydney Opera House to Rome's Colosseum to the Sears Tower's famous antennas in Chicago, floodlit icons of civilization went dark Saturday for Earth Hour, a worldwide campaign to ...