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TIL a Harvard research showed that having no friends is as deadly as smoking. Researchers have discovered a link between loneliness and the levels of blood-protein which can cause heart attacks and strokes

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via reddit.com

mxODE TIL Seattle-Tacoma International Airport in Washington, USA has the fastest airport WIFI in the world with download speed of 103.00 Mbps and Upload speed of 155.93 Mbps
Wk4LA TIL late medieval and early modern European cartographers believed that compasses consistently pointed North because there was a massive, perfectly circular island made of naturally-magnetic black rock at the North Pole.
yQndl TIL when caterpillars turn into a chrysalis, their butts drop off
QNPgk TIL the Unabomer, Ted Kaczynski, randomly chose his victims from library research.
nW5Zr TIL of the Giant GRB Ring which is a ring of 9 gamma-ray bursts. It is 5.6 BILLION light years across.