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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Antarctica Day
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Teacher Appreciation Day
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The Easter Bunny’s story
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Asteroid Day
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Necropolis of Dargavs
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Jöriseen lakes in the Silvretta Alps, Switzerland
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Zhangjiajie National Forest Park in Hunan Province, China
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Glendurgan Garden hedge maze is 186 years old
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A yearly sign that spring has sprung
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Rays on parade
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Gazing down on planet Earth
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Aw shucks, it’s oyster season in Galway
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Fight for your lefts
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The lemurs of Madagascar
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World Honey Bee Day
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Moody skies over Valletta
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Tennis in the park
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Gazing upon Portraits of Change
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Astronomy Day
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Celebrate Mandela Day
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Edinburgh festivals
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Mediterranean red sea stars
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World Turtle Day
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Chaco Culture National Historical Park, New Mexico
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Let the Highland games begin
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Why does this panda cub look so happy?
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World Oceans Day
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National Park Week: Wind Cave National Park
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The most Instagrammable bird?
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Regional Park of Migliarino, San Rossore, Massaciuccoli, Italy