The Houses of Parliament are dark to mark Earth Hour in London. Cities around the world were turning off lights at 8:30 p.m. local time in a call for global action on climate chang...
Lights are off for the global Earth Hour at the 14th-century red brick St. Mary's Basilica in the southern Renaissance city of Krakow, Poland.
The Chicago skyline is partially powered down for Earth Hour.
Philippine Boy Scouts switch on their flashlights at the countdown for the 12th Earth Hour event.
Philippine Boy Scouts play with their flashlights at the countdown for the 12th Earth Hour event in suburban Makati city east of Manila, Philippines.
People participate during Earth Hour 2019 by holding placards in the backdrop of historic Charminar in the old city of Hyderabad.
Lights are turned off at the Kremlin and Zaryadye Park to mark Earth Hour in Moscow, Russia.
The Kremlin is illuminated before the lights are turned off to mark Earth Hour in Moscow, Russia.
Lights are turned off at the Kremlin and Zaryadye Park to mark Earth Hour in Moscow, Russia.
An activist lights a candle, that is part of a design that forms the number 60, to represent the minutes in an hour, during the Earth Hour celebrations, in La Paz, Bolivia.
People gather near the arrangement of candles that form the number 60, to represent the minutes in an hour, during the Earth Hour in La Paz, Bolivia.
Activists of the World Wide Fund For Nature (WWF) write the words 'Earth Hour' with led-lights in front of the blacked out Brandenburg Gate to mark Earth Hour, in Berlin.
This combination of photos show the Acropolis hill before and after having its lighting switched off to mark Earth Hour in Athens.
In this two photo combination, Mumbai's historic railway station Chhatrapati Shivaji Maharaj Terminus is seen lit, top, and then the same location in darkness, after the lights wer...
Iconic Howrah Bridge seen lit before Earth Hour, in Kolkata.
Iconic Howrah Bridge seen in darkness after lights were turned off during Earth Hour, in Kolkata.
Women with their faces painted to on the eve of 60th Earth Hour, in Muradabad.
A globe illuminated with led-lights by activists of the World Wide Fund For Nature (WWF) in front of the Brandenburg Gate to mark Earth Hour, in Berlin.
