› added 6 years ago

138

TIL that spiders can fly for miles and have been found 2.5 miles above earth surface.

Read more voices.nationalgeographic.org

via reddit.com

X0VjQ TIL Ayman al zawahiri (2nd in command to bin laden) was killed by a drone made of 6 large blades known as “the ginsu”
bZLE TIL that after needing 13 liters of blood for a surgery at the age of 13, a man named James Harrison pledged to donate blood once he turned 18. It was discovered that his blood contained a rare antigen which cured Rhesus disease. He has donated blood a record 1,000 times and saved 2,000,000 lives.
eL6E TIL Soldiers in the U.S. military’s psychological warfare department (PSYOPS) used loudspeakers to tempt enemy fighters in Afghanistan into battles they couldn’t win by calling them,”lady men” and “cowardly dogs” and also air dropped propaganda leaflets.
xDmw TIL that the green iguana has a ‘third-eye’ called a parietial eye, in the middle of its forehead. This does not function in the same way as its two side eyes, but enables it to detect movement, especially from above, to help it avoid predators.
d8YmZ TIL that only specific types of sand are useful in important building materials like concrete. This has creates a shortage of sand in some areas leading to black markets for illegally mined sand run by sand mafias and sand pirates.