› added 11 years ago

142

TIL humans are bioluminescent. However, the light emitted by the body is 1000 times weaker than our eyes can pick up.

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4ENJ TIL North Korean tunnels exist under the DMZ, apparently designed for a surprise attack on Seoul. 4 have been discovered since the 1970s, but there are suspected to be up to 20 more.
m1lyY TIL Ancient Egyptians would put dead mice in their mouth with the hopes it would cure a toothache.
YGnx TIL Switzerland now has a negative interest rate, meaning that banks lose money if they don’t lend and in some circumstances customers lose money if they don’t borrow.
X0Ox8 TIL that inventor Elisha Gray, who lost the patent for the telephone to Alexander Graham Bell, also invented the first fax machine, using telegraph lines to transmit handwriting and documents in 1887
Owj4 TIL Alpacas can die of loneliness, when bought they always need to be bought in pairs.