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TIL that dogs' noses are so sensitive that they can smell whale poop in the ocean from up to 1 mile (1.6 km) away

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LQvrP TIL that Desmostylia, extinct ancestors of manatees, had a unique way of feeding: they vacuumed seagrass from the seafloor by uprooting it entirely with their mouths. This distinctive feeding method likely contributed to their extinction as they competed with other marine herbivores.
m51x TIL that Edison invented the electric chair to show that AC was more dangerous than DC so as to undermine Nicola Tesla and his financial backer Westinghouse at a crucial moment in the early days of the electricity wars. It backfired.
Y7p7G TIL the IRS still operates largely on mainframe computers running 60 year old code
wb78 TIL Astronauts have to sleep near a ventilator fan or they risk suffocating in a bubble of their own exhaled carbon dioxide
PY08O TIL Scientists were able to judge whether or not a woman recently experienced a vaginal orgasm simply by observing the movement of their hips as they walked with astounding 81.25% accuracy.