› added 7 years ago

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TIL that the famous "guilty look" dogs have when they realize they've done something wrong isn't actually guilt. It's actually fear of being punished.

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W7vP8 TIL that some seven tons of steel were recovered from the ruins of the World Trade Center to make the bow of the USS New York (LPD-21).
DZeD TIL Sir William Henry Bragg and his son, William Lawrence Bragg is the only father and son to share a Nobel Prize in physics.
9YjN7 TIL more than six billion different knot types have been identified by mathematicians and scientists since the 1800s.
l7BvV TIL about the Panic of 1837, a major financial depression in the U.S. that lasted until the mid-1840s. Nearly half of all banks failed, businesses closed, prices declined, and there was mass unemployment. The economy recovered by 1850 due to the California Gold Rush.
81e8 TIL that the positions of a windmill’s blades when stopped signal specific pieces of information.