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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Giving Tuesday
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47 years of Badlands National Park
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A silent witness to history
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Val Gardena, South Tyrol, Dolomites, Italy
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Fresh water on the Silk Road
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Wadden Sea coast, Friesland, Netherlands
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The moai you know
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A spectacle unlike any other
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Summer winds down in the Southern Hemisphere
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Edinburgh Castle, Scotland
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Sounds of Bach come to Bath
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Castle Day in Japan
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Patriot Day
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Celebrating World Water Day
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Striated heron on a Victoria water lily, Pantanal, Brazil
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Male hooded merganser, Oregon
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What does the fox dream?
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Happy birthday, Capitol Reef National Park
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A bridge of Madison County
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Leshan Giant Buddha, Sichuan, China
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Blue Lagoon spa, Grindavík, Iceland
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Seven Magic Mountains art installation, Jean Dry Lake, Nevada
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The frog prince?
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Let’s celebrate
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Happy Pi Day!
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The Monastery of Roussanou, Greece
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Ancient til trees in Fanal Forest, Madeira, Portugal
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Beware the Ides of March
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Hallstatt, Austria
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In the Supertree Grove
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