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TIL Supercharged blood helps some dolphins dive 1,000 meters

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6ERml TIL that hot water freezes faster than cold water. This is called the Mpemba effect.
XJgE TIL Between 1960 and 2010, the world population rose from 3 billion to 6.8 billion. In other words, there has been more growth in population in the last fifty years than the previous 2 million years that humans have existed.
PYAZE TIL that copra (dried coconut meat) is capable of spontaneous combustion and is thus forbidden from being transported by air unless express permission is given by a relevant authority.
xVb7o TIL about Oh Gum Soon, a badass Korean defense force nurse who shot down 6 North korean soldiers who raided her hospital, scaring away another 5. She was awarded the national hero for her service.
l7oMB TIL Dinasours have lived in another part of the galaxy. Although this news is quite old, I learned today that dinosaurs wouldn't have even seen the stars that we see today in the sky because they didn't exist until millions of years after the extinction event.