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Today I learned A cat's purr might also mean they are in pain

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L16Q TIL The pistol shrimp closes its claw so quickly that it sends a shockwave of bubbles that burn as hot as the sun and generate 80 kPa of pressure, stunning or killing fish. The shrimp can even interfere with sonar and underwater communication.
Oo8jL TIL that a British soldier whose ship was sunk by a U-boat survived for 70 days at sea. After being rescued, he was sent back to England from the Bahamas on a cargo ship. It was hit by 2 torpedoes from a U-Boat as they were approaching the UK. There were no survivors.
d9vr TIL that as part of the British Royal Navy’s ‘Last Resort Letters’, in the event of a catastrophe submarine commanders will verify annihilation of civilised society in Great Britain by checking if BBC Radio 4 is still broadcasting.
9wM4X TIL that prior to 9/11, the most FDNY firefighters lost in a single day was 12. The 23rd St Fire on October 17, 1966 killed 12 Firefighters when a floor collapsed. A recent renovation to the building had removed a load-bearing wall in the basement to increase storage space for an art dealer tenant.
XwgX TIL an MIT geek in the 70’s convinced a record label he had a band recording an album in LA. In reality he mixed the entire thing himself from old homemade demo tapes in a run-down basement in Boston. It only cost a few thousand dollars to create, and sold more than 20 million copies worldwide