› added 8 years ago

1371

TIL the United States has a town entirely in Canada

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XByk TIL That the bolt holding the rotor blades onto a helicopter is called a jesus nut. It is a single point of failure which would lead to the helicopter crashing
xV9QB TIL: Mangos are in the same family as poison ivy, so if you are sensitive to poison ivy, the skin of a mango is likely to affect you too.
mxGgY TIL that blind women also care about fashion and makeup
GAGxG TIL that in 1976, eight equatorial countries signed the Bogota Declaration in an attempt to assert sovereignty over those portions of the geostationary orbit that continuously lie over the signatory nations' territory in contradiction of the Outer Space Treaty.
X0EDj TIL that Tibetans underwent the fastest genetic change ever observed in humans. Biologists found 30+ genes with DNA mutations more prevalent in Tibetans than their predecessors, the Han Chinese, half of which help the body regulate oxygen use. They even have a "super-athlete gene" called EPAS1.