› added 4 years ago

281

TIL that Finland's air force still uses swastika symbol as unit emblems, unit flags and decorations even on uniforms.

Read more bbc.com

via reddit.com

9Ydkm TIL that a paper centrifuge has been designed by Manu Prakash in 2016 based on spinning toy, whirligig. It can reach 20,000 rotations per minute and can be used to separate plasma from blood and malarial parasites, operate with hands without electricity and costs 20 cents.
jNG7N TIL Whilst the City of London area has a daily estimated footfall of roughly half a million, there's only a resident population of 9,400
BDZr TIL Ulysses S. Grant was also planned to be assassinated along with Abraham Lincoln by John Wilkes Booth, but did not attend the play at Ford Theater because their wives were not on good terms.
XER6Q TIL there is a group of human mutant who are virtually resistant to HIV infection. They have a mutation called CCR5-Δ32 which make their T-Cells impervious to HIV
9K0p TIL chillies evolved heat to deter mammals from eating them whilst not affecting birds, who can’t taste them and fly around pooping the seeds eveywhere