› added 9 years ago

173

TIL that only once in history has one submarine deliberately sunk another submerged submarine

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16DYd TIL that in 1928, millionaire Howard Hughes set a bizarre rule for his staff: they had to handle everything he touched with tissues to avoid germs. Later in life, Hughes became so obsessed with cleanliness that he lived in sealed rooms, wore tissue boxes on his feet, and stored his urine in jars.
NyN6 TIL that 85% of chinese people share only 100 surnames, and that “Li” and “Zhang” covers 13% of the chinese population.
wLvrE TIL Johnny cash got the tempo to "I Walk the Line" from his heartbeat when he wrote the song. His heart beat was pretty fast that day, he felt his pulse and put the music on beat with it.
0wZPp TIL after her husband (Fritz Haber, Nobel Prize winner) returned home from the front lines, having recently helped unleash chemical weapons onto the battle field for the first time, Clara Immerwahr shot herself in the heart with his military issue pistol in protest.
Oo94X TIL that about 85 percent of hospitals still use pagers because hospitals can be dead zones for cell service. In some hospital areas, the walls are built to keep X-rays from penetrating, but those heavy-duty designs also make it hard for a cell phone signal to make it through but not pagers.