› added 7 years ago

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TIL of the first and only Space Mutiny when an American crew shut off communication equipment to protest their disagreement with NASA.

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epkp4 TIL about the cosmic lithium problem: Post-Big Bang, the universe had mainly hydrogen and helium, with traces of lithium and beryllium. Surprising, there's 3x less lithium in ancient stars than predicted and scientists aren’t sure why.
P95L TIL that Russia has so many dashcams because drivers use them to avoid road rage induced fights, denied hit and run insurance claims, and extortion scams.
97rD TIL that the Vikings essentially invented rap battling during the fifth century.
byD0 TIL the use of GPS substantially diminishes the ability of people to make mental maps and process spatial data and memories.
eppGE TIL hippos are actually not great swimmers. Instead, they mostly move with a sort of slow-motion gallop along the riverbed and they must be denser than water