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TIL Giant Isopods can survive for years without eating!

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via reddit.com

WkoB9 TIL that Robert Smalls who born into slavery stole a confederate military ship, disguised himself as a captain, used a secret code book and hand signals to pass Confederate guard ships, rescued slaves and families, worked as military advisor to the union until war ends and ran for Congress and won.
rRW1w TIL that orcas have been targeting great whites, putting them into tonic immobility, and eating their livers.
jNw6n TIL Around 50% of the protein you consume comes from the Haber-Bosch process. Without this process, we would've never been able to maintain our current population's food intake.
5YWrQ TIL that the phone system's three rising tones (Special Information Tone, or SIT) comes in 8 varieties that are similar but can be distinguished by electronic equipment. It was designed so equipment could identify the error, even without understanding the spoken message.
woNG8 TIL that Hans Zimmer composed the theme tune for legendary 80's TV show Going For Gold