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8aVnL TIL light doesn't always travel at the speed of light and has been recorded as slow as 38 m.p.h. (17 meters per second)
ky1B TIL that hot dogs are called hot dogs because they were rumored to be sausages containing dog meat, served hot. The government put an excise tax of $200 on every hot dog stand in response as a way of stifling the practice of selling them.
by4N TIL Bausch & Lomb packaged identical lenses under 4 different brands with different pricing, charging $3 to $70 per pair depending on how often the lenses would be replaced. They also repackaged lens cleaning solution (23¢ per ounce) as eye drops, which sold for $4.49 per ounce.