How do we know what Earth looked like long before humans appeared? Fossils provide many clues. From dinosaurs to tiny marine organisms, these remnants of the past preserve snapshots of ancient worlds that no longer exist.
Ammonite fossils from the Jurassic Period
Today in History
More Desktop Wallpapers:
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Nazaré, Portugal
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Sligachan Old Bridge, Isle of Skye, Scotland
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World Donkey Day
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Lençóis Maranhenses National Park, Brazil
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The festival of breaking the fast
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International Tea Day
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Moeraki Boulders, South Island, New Zealand
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Christmas star lanterns, Germany
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Aït Benhaddou, Morocco
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Reflecting on Christmas
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International Ice and Snow Festival, Harbin, China
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Winding road of Julier Pass, Switzerland
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Pride Month
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MPs most photographed big cat
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Creating a better world
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In the spotlight
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Skyscrapers in Manhattan
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Mesquite Flat Sand Dunes in Death Valley National Park, United States
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Union Square, Manhattan, New York, USA
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Sleeping koala
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May the 4th be with you
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Bodie State Historic Park, California, United States
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Grand Canyon National Park, Arizona, United States
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Amphitheatre of El Jem, Tunisia
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Earth Day
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Sanctuary among the trees
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The citadel in Bonifacio, Southern Corsica, France
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Whale shark, Ningaloo Reef, Western Australia
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Bran Castle in Bran, Brașov, Romania
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We’ve identified these ‘flying objects’
Bing Wallpaper Gallery

