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TIL that a molten-salt reactor, a piece of technology conceived during the Cold War that forgoes solid nuclear fuel for a liquid one, can generate energy with far greater efficiency than any power technology in existence.

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R7ee6 TIL that research is being done on psychedelics to alleviate cluster headache symptoms. Cluster headaches are an extremely debilitating and painful neurovascular disorder that many are unable to find relief for. By isolating parts of the substance, they can also remove the hallucinogenic effects.
oxeL TIL that in ancient Rome during funerals, a person called an Archimime would walk behind the deceased and imitate the person like they were still alive.
R9p1 TIL: The Minnesota historical society is older than the state of Minnesota.
v1ML8 TIL about Ed Long who clocked over 65,000 hours flying. Started at the age of 17 with his first and only lesson in 1933.
P1nrZ TIL the algae on sloths' fur can be an emergency food source. Sloths usually eat leaves, but they sometimes consume the algae that grows on them, gaining extra nutrients. This unique adaptation not only camouflages them but also provides an additional food option when other sources are limited.