› added 1 month ago

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TIL about “ telephoning for catfish” Southern fishers in the 1950s jury-rigged components of old crank-style telephones to send an electric current through the water and stun fish, and it only works on fish with no scales, like catfish.

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R5dBj TIL that modern nuclear submarines are so well camouflaged that in 2009, two French and British nuclear ballistic missile submarines collided by chance in the Atlantic Ocean. They were moving so slowly that they couldn't have detected each other just a few feet apart.
rR8Kw TIL about an experiment "universe 25" that studied societal collapse due to overpopulation using rats that inspired the children’s book, Mrs. Frisby and the Rats of NIMH.
Y7X6W TIL that photographer Yousuf Karsh used a joke from the Pope to make Mandela feel comfortable for a photo shoot
oBLbK TIL it took 50 years for Delia Derbyshire to be credited on-screen as creator of the original "Dr Who" theme music, due BBC policy to keep employees of the Radiophonic Workshop anonymous
yQMWa TIL that Antartica has a native insect species the Antarctic Midge, Belgica Antarctica. The species has been for around 30 million years and has adapted to surviving the cold, it is the technically the largest land animal on the contient and has the tiniest genome of any insect.