› added 7 months ago

15

TIL horseshoe crab blood is worth 60,000$ per gallon

Read more sciencecenter.org

via reddit.com

wovKJ TIL that during helicopter nap-of-the-earth night flight, crews may deliberately fly below power lines, using pre-planned obstacle data, NVGs, radar altimeters, and strict crew callouts, because climbing to clear wires would break terrain masking and increase radar and visual detection risk.
6EAx8 TIL of Robert Smalls, a slave during the Civil War who escaped by commandeering a Confederate transport ship, persuaded Lincoln to allow African-Americans in the army, and later became a US House Representative. One of his final actions as a leader was to stop a lynch mob from killing two black men.
XEykD TIL about Aleen Cust, the first woman veterinary surgeon in the UK and Ireland. She practiced as a vet for 25 years before she was officially recognised by the RCVS. During this time, she owned her own practice and volunteered at the front lines of WWII treating horses
xoZo TIL that slave labor was used to build the White House
kO5W4 TIL that the name, Plastic Surgery, has nothing to do with the material and comes from the Greek word plastike (πλαστική) which means the art of modelling.