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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What kind of bird laid these eggs?
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Lake Misurina, Dolomites, Italy
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Okefenokee Swamp
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Merced River, Yosemite National Park, California
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Snow aglow in central Japan
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Happy New Year!
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World Rainforest Day
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Teacher Appreciation Day
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Fiordland National Park, New Zealand
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When an ideal microclimate gives you lemons…
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Things are looking up
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Loud waters
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Just another day in paradise
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Punakaiki on South Island, New Zealand
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World Elephant Day
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The Pearl of Siberia
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On the wings of the Wright brothers
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Fire-damaged forest near Wolf Creek Pass, Colorado
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Plitvice Lakes National Park in Croatia
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World Elephant Day
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Agüero, Huesca province, Spain
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Summer solstice
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A stunning national park in winter white
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Indian Independence Day
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Celebrating all things Austen
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A spectacle unlike any other
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Ministry of Fun Santa School
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Ahh-tumn
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Mount Rainier National Park
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Brooklyn Bridge Park in Brooklyn, New York
Bing Wallpaper Gallery

