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TIL 50 to 85 percent of oxygen on Earth comes from the ocean, mainly from phytoplankton.

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kORYe TIL in 1963 Robert Kearns invented the intermittent windshield wiper, presented it to Ford Motor Co. and was hired. Ford fired him and took his technology. He sued Ford for patent infringement and after 12 yrs. of litigation, at times without a lawyer, the court awarded Kearns 10.3 M dollars.
Eg8X TIL in a psychological study on homophobia it was discovered that homophobic men were more aroused by gay porn than the control group. Arousal was measured in terms of erection intensity.
A9lx TIL Ostriches are the largest and heaviest birds in the world, they can outrun Leopards, their kick is strong enough to kill a Lion, male Ostriches can roar like a lion and they can see as far as 2.2 miles (3.5 km).
GAWEj TIL in the middle of Boston, Massachusetts, there is a 120-year-old abandoned concert hall known as Steinert Hall that is 40 feet underground, buried beneath a piano store.
YpNw7 TIL of Alfred Wintle, a British officer in World War 1 who tried to escape hospital disguised as a nurse. Although he successfully attended a women-only dance in the nurses' quarters, he was caught as he forgot to take off his monocle.