› added 10 years ago

107

TIL that there will be a helium shortage in 20 years.

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0dOOL TIL that Microsoft’s refusal to support IBM’s PS/2 system led to the rise of cheaper PC clones, helping Windows become the world’s most dominant OS.
wXvJ TIL That a Y2K bug caused incorrect Down sydrome test results being sent to pregnant mothers, resulting in two abortions.
6Ep9Z TIL Sunspots are used to observe the sun's rotation and have an average lifespan of 2 weeks. A magnification of 40x-50x in a filtered telescope shows a full-disc view of the Sun, and if sunspots are present, they will appear quite small
rR104 TIL Seattle was the site of a mass collective delusion in the 1950s, when thousands of people thought their cars were being pitted by cosmic rays or sand fleas.
J1yjj TIL that I, and 1 in 5 of you, have anisocoria—pupils that are generally different sizes. This doesn’t intrinsically represent a medical issue, but can be caused by a couple things, I.e. Horner’s Syndrome, Adie tonic pupil, oculomotor nerve palsy etc.