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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Point Reyes National Seashore, California
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Happy World Laughter Day
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In the valley of the doll
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Yabba-Dabba-Doo!
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Happy Hobbit Day
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A big place to shop small
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The story of the poinsettia
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Santorini through the clouds
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Astronomy Day
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Don’t get lost in there
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Kelp buddies
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Penguin Awareness Day
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Arrr! Can you talk like a pirate?
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Who created the Easter Bunny?
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Saint Andrews Day
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Travel Sunday: Liverpool
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World Teachers Day
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Oktoberfest begins
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Dubrovnik, Croatia
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All hail the king of shrubs
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A new tradition in London
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The National Museum of the American Indian
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Happy Mothers Day!
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Corkscrew Swamp Sanctuary
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Arctic fox in Norway
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There’s treasure in them thar hills
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Gujō Hachiman Castle, Gifu prefecture, Japan
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Red squirrel in Cairngorms National Park, Scotland
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Grand finish of Le Tour
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World Water Day