Rome landmark Colosseum goes dark to mark Earth Hour

New York's Empire State Building goes dark for Earth Hour

London goes completely dark for Earth Hour

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Help save the planet this Earth Hour

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NYC's Times Square Goes Dark for Earth Day

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Cosmos A Spacetime Odyssey HD Hindi Urdu Episode-1 Standing Up In The Milky Way | amazing space documentary about earth, planets, stars, universe, life, scientists, old civilizations, dark space

A young peregrine falcon's lesson in hunting leaves one pigeon fighting for survival. These are the stories from the darker side of our planet. Find #BadNatured every Sunday on the BBC Earth YouTube channel.

Landmarks worldwide go dark for Earth Hour

Lights around the world go dark to celebrate Earth Hour

Bangkok landmarks go dark to mark Earth Hour | The Nation

Sydney and Singapore go dark for global Earth Hour

Landmarks Go Dark for Earth Hour

Star Trek Into Darkness Earth Hour Event 2013 HD

Landmarks go dark around the world for Earth Hour

NEWS & VIEWS | Global landmarks go dark for Earth Hour

Sights around the world go dark to celebrate Earth Hour

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For the Love of Korean Culture.. Two Emirati Ladies are participating in Expo 2020 Dubai!

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Needy children are looking forward to the joy of Eid with your support, donate with Dar Al-Ber Society!

Richard Bernstein.. Born to make an impact!