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
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Happy World Laughter Day
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Panda Day
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Punakaiki on South Island, New Zealand
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Poinsettia Day
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The globe skimmers return
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Happy Fourth of July!
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International Day for the Conservation of the Mangrove Ecosystem
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Lake Magadi, Kenya
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Grizzly bears in Alaska for National Wildlife Day
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Speed skaters in the Gangneung Oval, Pyeongchang, South Korea
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The rainbow connection
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The Lena Delta Wildlife Reserve in Siberia, Russia
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Tulips, Netherlands
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Channel Country, Australia
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Best fronds forever
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National Mushroom Month
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Alaska Day
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It s aboat time for the Barcolana
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Happy World Meteorological Day
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A wild, craggy corner of the United States
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What happened to these clouds?
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A festival of colors
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Flying high on National Bird Day
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Amphitheatre of El Jem, Tunisia
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Gifford Pinchot National Forest
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Flowers by the sea
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Celebrating Labor Day
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What are we looking at?
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Remembering the Velvet Revolution
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Art over Amalfi
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