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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Traffic jam on the caribou highway
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Penguin Awareness Day
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Red squirrel in Cairngorms National Park, Scotland
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Pegadung Rock, Lampung, Sumatra, Indonesia
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Castle ruins on the island of Halki, Greece
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Patriot Day
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They’re grrrape!
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Four little birds sitting in a tree…
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World Architecture Day
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Happy World Meteorological Day
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European beech forest, Belgium
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Autumn comes to the Porcupines
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World Water Day
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Daylight saving time
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Nighttime view over the Gulf Coast
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The Wall for Peace
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Trevi in bloom
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An oceanic valentine
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Fashion models of the avian world
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Let the harvest begin
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Easter Sunday
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Tasiilaq, Greenland
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Christmas lights in Domaso, Lake Como, Italy
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Paradise, found
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Bobbio, Italy
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Indigenous Peoples Day
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Cuban tody, Alejandro de Humboldt National Park, Cuba
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So, how long till springtime?
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Happy Fathers Day!
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In the Highlands for Saint Andrew s Day
Bing Wallpaper Gallery

