› added 1 year ago

63

TIL the skeletal muscle pump is a collection of skeletal muscles that aid the heart in the circulation of blood. It is especially important in increasing venous return to the heart and is vital in negating the effects of orthostatic intolerance when standing.

Read more wikipedia.org

via reddit.com

OopR6 TIL the largest industrial disaster in history occurred in 1975 during the cultural revolution in China. The Banqiao Dam collapsed during a typhoon which is estimated to have killed hundreds of thousands. The CCP covered up this disaster for almost 20 years.
4k0bN TIL about the 4000-Year-Old “Longshan Giant” Discovered in Shaanxi Province, China.
9wZxM TIL that early European railroads locked passengers in train cars. Doing so ended in France after the Versailles rail accident of 1842 killed up to 200 people, who could not escape when a derailment and crash caused a fire.
woYDo TIL in early 1942 the Battle of Los Angeles was fought, with an hour-long barrage of anti-aircraft artillery fired from the city against a perceived Japanese invasion. The cause: a stray weather balloon.
BGWk TIL; that in the 19th century puberty began at 15 for girls and 16 for boys, instead of 11 for girls and 12 for boys as it is now.