From this vantage point high over the Indian Ocean, we have a spectacular view of the "underwater waterfall" formed off the coast of Mauritius. Not a true waterfall, this is an optical illusion—it"s really the trails of sand and silt deposits on the seafloor being washed by currents over the edge of an ocean shelf. But we"re probably not alone in thinking at first glance that the ocean is pouring into some massive unseen drainpipe.
Getting to the bottom of the underwater waterfall
Today in History
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Making it work—in Norway
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Cold? What cold?
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Kinder Scout, Peak District National Park, England
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Peel Castle on St. Patrick’s Isle with the Isle of Man in the background
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Summer’s in home stretch
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World Bicycle Day
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Breaking the fast for Eid
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World Lion Day
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International Polar Bear Day
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Johnston Canyon in Banff National Park, Alberta, Canada
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Oymyakon, Russia
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Provence blooms with lavender at Sénanque Abbey
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We heart Berlin
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Bobbio, Italy
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Cranborne Chase, England
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Corfe gets creepy
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The Guggenheim Bilbao turns 25
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Thomas Jefferson Memorial, Washington, DC
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Black grouses lekking
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Haaga Rhododendron Park
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World Rivers Day
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A century since Tut s tomb was discovered
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Old Town in Prague, Czech Republic
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These patterns tell a story
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Oh, happy day!
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Craig Goch Dam in the Elan Valley of Wales
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Go Fly a Kite Day
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Toledo, Spain
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World Laughter Day
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Northern hawk-owl