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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Red squirrel in Cairngorms National Park, Scotland
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Hyalite Creek at Custer Gallatin National Forest, Montana
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Tasmans Arch, Tasmania, Australia
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North Cascades National Park at 50
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National Pearl Harbor Remembrance Day
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Fibonacci Day
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Mexican giant cardon cactus
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Lençóis Maranhenses National Park in Brazil
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Two rocks and a heart spot
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A ‘Superior’ paddle
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Come out of your shell for World Turtle Day
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The island fox’s incredible comeback
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Midnight sun
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Float on
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Cheetah in Ngorongoro Conservation Area, Tanzania
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Exploring the Pearl of the Atlantic
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Purple crocus flowers, Seven Rila Lakes, Bulgaria
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World Elephant Day
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Red squirrel
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In search of roadside attractions on ‘America’s Highway’
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With leaves this tasty, who cares about a view?
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Cherry blossoms in Shanghai, China
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Glen Brittle, Isle of Skye, Scotland
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Spectacular views below!
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Whangārei Falls in New Zealand
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It s World Bee Day
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The Easter Bunny’s story
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Speed skaters in the Gangneung Oval, Pyeongchang, South Korea
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Tokyo welcomes a futuristic new art museum
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Ronda, Spain
Bing Wallpaper Gallery

