When the lights go down, the universe puts on a show. International Dark Sky Week, celebrated each April, invites everyone to rediscover the night and learn why darkness is worth protecting. Launched in 2003, the week highlights how excessive artificial light affects wildlife, human health, energy use and our ability to see the stars. Fewer lights don"t mean less safety—smart, well-designed lighting can do both.
International Dark Sky Week
Today in History
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A city so nice, they made it twice
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Take the Stairs Day
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Mardi Gras
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What are these unique creatures?
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Duomo Santa Maria del Fiore, Florence
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International Mountain Day
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Grey seal pup
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Independence Day of the Argentine Republic
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A day for giving
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So fresh, so clean
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Hot enough to howl
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Dare to tread through the fairy flower?
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Christmas market in Leipzig, Germany
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Postcard from Italy
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Colourful house in Olinda, Pernambuco, Brazil
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Rufous hummingbird
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Vancouver Coastal Sea wolves in the Great Bear Rainforest
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Two hungry baby beavers
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Launching hopes and prayers
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Trunks packed for road
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Meet an expert on the dog days of summer
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Milky Way over Southwest Alentejo and Vicentine Coast Natural Park
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Blue as far as the eye can see
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Blueberries growing in the wild
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Devetashka Cave, Devetaki, Bulgaria
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Back to the future
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Spine-cheeked anemonefish
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Boxing Day
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An ultralight aircraft flying over the sands of Namibia
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The largest gypsum dune field
Bing Wallpaper Gallery

