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  1. 19685

    When I looked at the photo in this article, I didn’t see a “pentagonal shape” in the swirling water. I saw a sine wave, wrapped around a circle. I was immediately reminded of the Bohr–de Broglie model of electron orbits forming standing waves. Rather than swirling water and glycol forming “unexplained” polygons, isn’t this simply […]

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  2. Archaeology

    Jarring clues to Tut’s white wine

    Chemical analyses of residue from jars found in King Tutankhamen's tomb have yielded the first evidence of white wine in ancient Egypt.

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  3. Health & Medicine

    Blood, Iron, and Gray Hair

    Recent findings show that anemia is exceedingly common in elderly people and link the condition to severe health problems, including accelerated physical and mental decline and a shorter life span.