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TIL that there is an international event known as "Field Day". It's held on weekends in June ever since 1933, where about 30,000 civilians just talk to each other over different styles of radios to maintain emergency preparedness.

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8e09X TIL the 22nd Amendment, in addition to limiting the president to two terms, also states that, if the president's successor serves for more than two years in their first term, they can only be re-elected once.
4X6x5 New evidence suggests that the chemical trails ants leave to communicate where to go might not be produced by ants after all - but the microbiome in their abdomens.
PYWNZ TIL that Leonard Adleman said "Well, it's going to be the least important paper I've ever been on" when accepting to be a part of development of the RSA algorithm.
J1gQV TIL: Aphantasia - a condition that blocks the mind’s eye, affects 2-5% of people globally and reduces their ability to remember the past, imagine the future, and even dream.
ry0W TIL that despite the fact that it is widely believed that 25% to 40% of bottled water is simply bottled tap water, people spend from 240 to over 10,000 times more per gallon for bottled water than they typically do for tap water.