TIL that vitamin D deficiency worsens respiratory tract infections. That's one of the reasons why in summer there are fewer cases of flu than in winter.
TIL that after Salvador Dali expressed support for Spanish dictator Franco's regime, Pablo Picasso refused to mention Dali's name or acknowledge his existence for the rest of his life
TIL that during the Apache Wars in the American Southwest, the Apache would cut the Army's telegraph lines but reconnect the ends together with a strip of leather to make the break in the circuit nearly impossible to find.
TIL Joe McCarthy, the US Senator responsible for blacklisting thousands of Americans accused of being a communist, was a well known Nazi sympathizer who was largely responsible for ensuring that the vast majority of Nazi's were not prosecuted in Nuremberg
TIL that saving $2k a year from age 19-26 would leave you with more money at 65 than if you invested the same amount from 27-65. At 10% a year average returns, the person who saved for seven years would have over $1M, while the person who saved for almost 40 years would have about $800k.
TIL that the Peace Sign, created in 1958 by Gerald Holtem, was made to mimic how sailors communicate via flag signals. The angle "N" stands for Nuclear and the line "D" stands for Disarmament.