› added 4 years ago

84

TIL that US food manufacturers used cans that were soldered with lead until 1991.

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Wk41o TIL that cyclists move fater when they cycle together with others. Interestingly, cockroaches move faster in the presence of others as well. (Triplett, 1897; Zajonc, 1969)
E5JW TIL that the reason we say “redhead” instead of “orangehead”“ for hair color is because English didn’t differentiate between the colors until the 1540s, long after the term was coined.
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.
GARd7 TIL that feminist American magazine Ms. has not carried advertisements since 1990
neXoP TIL Arnold Schwarzenegger picked up his first barbell in 1960, when his soccer coach took his team to a local gym. At the age of 14, he chose bodybuilding over soccer as a career.