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TIL Grey eyes appear grey due to Mie scattering, the same type of scattering that causes the sky to appear grey on rainy days.

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LkVvp TIL In 1997, the FDA rules governing pharmaceutical advertising changed, allowing companies to name their drug and what it's for, while only naming the most significant potential side effects. Nielsen estimates there's an average of 80 drug ads every hour on American television, up from 3 in 1996
JYkOl TIL Creedence CLearwater Revival has the most No.2 Billboard hits without ever hitting No. 1
W1m4 TIL China produces half of worldwide vegetables and 30% of fruit
16obD TIL When Al Capone reached prison he was diagnosed with neurosyphilis, and eventually paroled early based on his reduced mental capabilities.
lN91 TIL that, in the early 1960s, the CIA coined the term ‘Plausible Deniability’ to describe the withholding of information from senior officials in order to protect them from repercussions in the event that illegal or unpopular activities by the CIA became public knowledge.