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 Star Wars Day!
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World Oceans Day
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Pretty in pink, and purple, and red…
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A Flag Day tradition
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Don t go chasing waterfalls
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National Moth Week
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Composite image of a lunar eclipse
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In the Supertree Grove
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Women s suffrage at 100
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World Population Day
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Celebrating Bike to Work Week, May 14-18
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Autumnal equinox
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Flamingos of the Chilean desert
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And to think that I saw it in Cappadocia
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Summer’s in home stretch
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Mandarin duck, Richmond Park, London, England
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International Day for Biological Diversity
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Observing World Braille Day in Bavaria
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Bridge to infinity
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Reflecting on fall
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Cherry blossoms at the National Mall, Washington, DC
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Behold the mighty Aldeyjarfoss
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Landscape Architecture Month
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A polar bear near Churchill, Manitoba, Canada
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Jerte Valley in bloom
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Mediterranean red sea stars
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Groovy!
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Autumn equinox
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Te Rewa Rewa Bridge near New Plymouth, New Zealand
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World Space Week begins
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