› added 9 months ago

59

TIL That pencils were painted yellow to appeal to the Asian market. Yellow represented health and prosperity.

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VMxK8 TIL bears make a purring sound somewhat like a cat when they are comfortable or eating a special treat or, for young bears, nursing. They make tongue click sounds when they are approaching other bears to mate or play.
7rkGX TIL that stress or abuse in childhood can rewrite your DNA causing reactions in adulthood that are out of line with reality. Further, the DNA changes can be passed on to children through a pregnant mother who is experiencing stress.
8dM8 TIL Plane exhaust kills more people than plane crashes. Approximately 10,000 people are killed annually from toxic pollutants from aircraft compared to around 1,000 from crashes
BrA5d TIL the first submarine attack on a ship occurred in 1864, when the CSS Hunley sank the sloop-of-war USS Housatonic using a spar torpedo, a primitive form of torpedo that was, in essence, a bomb on the end of a stick encased in a motor boat.
QNEMp TIL about Zion Clark, the Guinness World Record holder for being the fastest man on two hands. He was born without legs because of a genetic condition. He's also a wrestler and hoped to compete in Tokyo 2020 Paralympics but narrowly missed out.