The Grand Prismatic Spring at Yellowstone National Park is so colorful that it’s hard to believe there aren't dyes or Photoshop involved. But the formation is totally natural. The hot spring is one of many geysers...http://www.neatorama.com/2014/05/12/The-Science-Behind-Yellowstones-Rainbow-Hot-Spring/
The Science Behind Yellowstone's Rainbow Hot Spring...
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