What are These Mysterious Pools in the Middle of the Desert?

In the excellent video below, Derek Muller from the YouTube Channel Veritasium goes to the Utah desert to investigate some mysterious blue pools that show up on Google Earth. His explanation of what these pools are takes us on a science and history tour de force that includes fireworks, George Washington, soap, glass, Gatorade, gun powder, a scientist named Humphry Davy, every other person on the planet, and lots of money. Enjoy!
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