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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Yellow-eyed penguins, Moeraki, New Zealand
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Arches National Park, Utah
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It’s Penguin Awareness Day
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Sonoma Coast State Park, California
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Where fire meets water
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Przewalskis horses, Hustai National Park, Mongolia
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Don’t look down
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Arromanches-les-Bains for the 81st anniversary of D-Day
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A bird of beauty
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Evening over Göreme, Cappadocia, Türkiye
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Mount Logan in Yukon, Canada
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Wahclella Falls, Oregon
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Aýna, Albacete, Spain
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Celebrating Helsinki’s birthday at the Kiasma Museum
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Incense making, Vietnam
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World Art Day
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Tracking ships on the Day of the Seafarer
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Quiver trees in Namibia
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Is that a face in the sand?
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Longs Peak, Rocky Mountain National Park
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Nazca boobies, Wolf Island, Galápagos Islands, Ecuador
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Fall comes to Pando
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A wild and scenic scene
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The buzz about bees
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Big dreams require a big sleigh
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Welcome to California
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Winter in the Wild West
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Mexico celebrates its Independence Day
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Seitan Limania Beach, Crete
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Surf s always up in Paia
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