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TIL the “nasal cycle” is the biological process that automatically switches the bulk of breathing from one nostril to the other throughout the course of the day - and it explains why those with colds will often feel more stuffed up on one side at any given time.

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P1kkL TIL the McLaren F1 is so valuable now, that it is essentially impossible for one to be "written off" by an insurance company, since the repair costs will always be less than the value of the car. Furthermore, McLaren will fully repair a crashed F1, no matter how substantial the damage.
b087 TIL Pope Francis is the first Jesuit Pope, the first Pope from the America’s, the first Pope from the Southern Hemisphere, and the first Non-European Pope in 1,272 years. I think he is also the first Pope to be a nightclub bouncer.
80n8 TIL that negative stereotypes about Star Trek fans have existed for a very long time. A 1975 newspaper article mocked them as fat junk-food eaters obsessed about show trivia.
PWPO TIL that farmed salmon actually has white flesh because they don’t get to eat much krill and shellfish. Salmon farmers add the organic pigment that causes the orange flesh in wild salmon, astaxanthin, to the salmon’s feed because consumers are reluctant to purchase white-fleshed salmon.
QQ6X TIL the worlds smallest concept gasoline engine is 15 mm long 5 mm wide and 3 mm tall. It will produce 11 watts at up to 50,000 rpm’s and it could power an LCD watch for two years on a single drop of lighter fluid.