› added 2 years ago

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TIL the Great Wall of China is only visible from space if you have good eyesight!

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AyEn TIL that mathematician Marina Ratner proved her most influential theorem after she turned 50, defying a common notion that only young mathematicians can do great work
DNdg TIL Scotch tape has an unusual property. When placed in a vacuum chamber, unpeeling a length of tape from the roll will produce an enormous amount of X-ray radiation. The reason why it does this isn’t well understood.
YAGB TIL that when our ancestors started walking upright on two legs, our skeleton configuration changed affecting our pelvis and making our hips narrower, and that’s why childbirth is more painful and longer for us than it is to other mammals.
jNGAa TIL about the Roland MT80s, a boombox that played MIDI files from floppy discs. It also features a metronome to help people practice learning musical instruments. Also, Roland made these kind of machines up to late 2000s when they added an USB port.
vPMoj TIL that at Jim Henson’s memorial service on July 2 1990, Big Bird, puppeteer Carroll Spinney and Jim Henson‘s friend of 30 years, sang ‘it’s not easy being green’ (Kermit’s song) as a tribute to the late creator of the Muppets.