› added 4 years ago

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TIL that the outermost part of the solar system, the Oort Cloud, has not been directly observed, but is hypothesized partly on the basis of long-period comets such as Halley's Comet

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o4v7 TIL America is still in a state of emergency from 9/11
YpWoA TIL that viruses can 'eavesdrop' on 'communication' made by bacteria to time their infection on bacteria to conduct a larger killing spree. The new discovery can allow scientists to kill certain bacteria causing human diseases by programming the virus to attack it.
B5LW TIL that in 1963, JFK went on a western conservation tour to promote the environment
0wKpR TIL why rubbing an injury helps the pain. Nerves feel stretch (baro) temperature, pain, pressure. You can only feel one at a time. Pressure beats all in this game of rock, paper, scissors. When you cut yourself and squeeze the cut finger hard you feel the pressure but not the cut.
Egr9P TIL the name of the fighting machine the "Tank" got its name because of subterfuge, as the British wanted to pass them off as water tanks bound for Russia.