As National Park Week continues, we"re turning our attention to the vivid colors of the Grand Prismatic Spring in Yellowstone National Park. Its intense rainbow hues are formed by cycles of hot water rising, cooling, and falling—creating rings of distinct temperatures inside the spring. The clear, blue center is the hottest part, with almost nothing living in it. But the other rings are home to various microorganisms that produce bands of distinct colors ranging from green to orange to red.
Where do those colors come from?
Today in History
More Desktop Wallpapers:
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World Teachers Day
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Bridges to the past
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Cranborne Chase, England
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Moody skies over Valletta
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A sea of swirling stone
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Atlanta Botanical Garden
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A place called ‘Peace’ in India
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Black History Month
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Antarctica Day
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Happy Father s Day
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Kochia, Hitachi, Ibaraki prefecture, Japan
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European hedgehog
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Ponta da Piedade rock formations in Portugal
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A tree amid the Tetons
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Arches National Park, Utah
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Brown bears, Katmai National Park and Preserve, Alaska
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Why does this panda cub look so happy?
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Going head-to-head with winter
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Horseshoe Bend, Arizona
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Celebrating migrations
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Reindeer, Lapland, Finland
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Staring down winter
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Alaska National Interest Lands Conservation Act marks 42 years
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Third Thai-Lao Friendship Bridge connecting Laos and Thailand
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This park is Superkilen
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Beaver achievers
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Aprils full moon
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Swim city
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World Water Day
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Leopard at Etosha National Park, Namibia
Bing Wallpaper Gallery

