› added 10 years ago

82

TIL hair texture is caused by follicle shape. Round follicles grow straight hair, flat follicles grow curly hair.

Read more bio.davidson.edu

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EgKA7 TIL that ‘prom’ is short for promenade.
awn0A TIL that due to shortages penicillin was re-extracted from patients’ urine during World War II
7rAB7 TIL that coughing while cleaning inside your ears is not something that everyone else experiences and is actually an uncommon reaction called Arnold’s Nerve Reflex
d8WK TIL that when banana slugs mate, sometimes they get stuck, so, to separate, they take turns gnawing off the penis.
J1QGm TIL: The (in)famous problem of most scientific studies being irreproducible has its own research field since around the 2010s when the Replication Crisis became more and more noticed