New York City's skyline looked a little darker Saturday night without the Empire State Building's lights. Its famous tower lights were off from 8:30-9:30 p.m. in observance of Earth Hour.

NEW YORK CITY -- If you're looking at the New York City skyline on Friday night, you might wonder about the colors of the Empire State Building's lights. The iconic skyscraper will be lit up in ...

Major cities around the world marked Earth Hour on Saturday night, shrouding some of humanity's most famous monuments in darkness.

Rio de Janeiro's iconic Christ the Redeemer statue switched off its lights to mark Earth Hour. New York's Empire State Building also switched off its lights and joined the global campaign on ...