Our photo today has been digitally altered by NASA’s Earth Observatory team to remove natural light. Doing so reveals just how much artificial light human settlements generate. We share this image to draw attention to the observance of World Population Day today. The event was inspired by the Day of Five Billion on July 11, 1987, when the United Nations estimates our global population reached that milestone. Each year, World Population Day encourages us to think about how our growing numbers might affect our future, and the future of the planet we live on.
Evidence of human habitation
Today in History
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World of WearableArt Awards
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Mardi Gras flower power
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A notorious gunfight that was incorrectly named
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Groundhog Day
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World Oceans Day
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It’s Napping Day
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I m here! Take a look at me!
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Celebrating the International Day of Forests
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Mysterious prairie mounds abound
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Mountain mists over Bavaria
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World Water Day
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Punakaiki on South Island, New Zealand
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Blue-footed booby, Galápagos Islands
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Of moles and liquid nitrogen
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Aw shucks, It s Oyster Day
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Spring awakens
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Harvest time in the Palouse
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Get amped for Glastonbury
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Tasiilaq, Greenland
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Asian American and Pacific Islander Heritage Month
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So, how long till springtime?
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Bringing the moon to Earth
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South Padre Island, Texas
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International Kissing Day
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Devetashka Cave, Devetaki, Bulgaria
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All in a day s work
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Irohazaka road
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Nesting season for the leatherbacks
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An Alpine fairy-tale castle
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World Elephant Day