› added 8 years ago

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TIL: Redheads can’t absorb sufficient Vitamin D due to low concentrations of eumelanin in their body so instead their body can cleverly produce their own Vitamin D when exposed to low light conditions.

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69YW7 TIL that only 20% of the Earth’s deserts are covered in sand
8aLpK TIL that pine trees can produce a soapy foam after a heavy rainfall, due to rain water dissolving chemicals from the tree bark as it flows down the stem of the tree.
E1VN7 TIL the physicist Arthur Holly Compton, whose "scattering" experiment showed that photons have momentum, invented the "speed hump" on the campus of Washington University in St. Louis
yQQBp No one really knows why people often report feeling “fuzzy headed” when they have allergies.
nWBXo TIL that Van Gogh spent the last few months of his life in Auvers-sur-Oise, which is a small town to the north of Paris. He continued to paint up until his death in 1890. He also was admitted to the Asylum of Saint Paul in Saint-Rémy because of severe mental illness.