› added 4 years ago

256

TIL male penguins don’t have penises and penguins just kind of “rub holes” to have sex.

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b6Ml7 TIL the 1965 Spiegelman's Monster experiment demonstrated genetic replication and evolution in real-time at the molecular level, showing how natural selection could drive the emergence of more efficient genetic replication, even in an artificial setting.
yV7dM TIL: There was an Australian version of the old Superman radio serial from the 40s.
e0lYJ TIL well over half of all know Egytian obelisks were plundered over the millennia. Most were taken by the Romans, who moved 13 to Italy, with 8 in Rome alone.
N6xQ TIL that the words ‘idiot,’ 'imbecile,’ and 'moron’ were originally medical categories for intellectual disability
Z8rao TIL bladeless fans work by squeezing air & accelerating it. Air is forced out through slits, & clings to the curved aerofoil surfaces. This means surrounding air pulled along, too. The air flow becomes about 15 times greater than the air taken in.