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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Lavender fields on the Valensole Plateau in Provence, France
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International Archaeology Day
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Celebrating Flag Day
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The moth wonderful time of the year
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International Rock Day
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An underwater rainbow
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Groundhog Day
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A stroll above the stratosphere
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And they’re off!
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Hay, what s up?
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New York City skyline
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The tortoise and the finch
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Why do elephants hide in trees?
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National Pearl Harbor Remembrance Day
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Happy trails for the 21st century
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Northern cardinal in winterberry bush
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St. Barbaras Cathedral, Kutná Hora, Czechia
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Hello, harbinger of spring
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World Wildlife Day
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In celebration of cats
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Après-ski in the Dolomites
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Storks ready for takeoff
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Happy Boxing Day!
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Koala in the Great Otway National Park, Australia
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World Art Day
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Spotted eagle rays in the Galápagos Islands
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Saint Andrews Day
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Giant kelp in the Channel Islands National Marine Sanctuary
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Cloughoughter Castle, County Cavan, Ireland
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Happy New Year! (Again!)
Bing Wallpaper Gallery

