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TIL That Brian Wilson did a cover of the Barenaked Ladies song ‘Brian Wilson’.

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6EYEJ TIL Helicoprion is a genus of extinct shark whose fossil specimens reveal spirally arranged clusters of the individuals' teeth called "tooth whorls" that resemble our modern circular saw blades.The shark's blade, connected to cylindrical muscle tissue, would shred prey into small, bite-sized pieces.
JYPlV TIL that within 10 minutes of Allies landing on Omaha beach D-Day 1944,every Officer of the first wave Alpha Company had been killed. 30 minutes later the entire first wave Alpha company had a 96% casualty rate
ne95W TIL We breathe (mostly) out of only one nostril at a time, alternating (on average) every 2.5 hours. This is controlled via turbinates--small structures inside the nose which consist of bony projections covered by erectile tissue--filling one side with blood, while shunting blood away in the other.
pQdp TIL that in 2013, someone in Chicago placed a $600 million trade 2 milliseconds after the Fed publicly announced they wouldn’t slow bond purchases. The markets skyrocketed and the trader made lots of money. There was one problem though. It would have taken 7 milliseconds for light to get to Chicago.
W7o64 TIL that scientist Lynn Margulis, famous for the idea that mitochondria and chloroplasts were once free-roaming prokaryotes, was at one time married to astronomer Carl Sagan.