› added 3 years ago

140

TIL that air sirens are not just really loud speakers but spinning wheels that create pressure waves

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ADnBa TIL that the high you get from exercise isn’t from endorphins it’s from cannabis-like chemicals
5YBZD TIL that Phosphorous is a major mineral nutrient and the global reserve would be depleted within the next 50 to 100 years
xWgb TIL that when President George Washington died, Emperor Napoleon Bonaparte ordered ten days of mourning in France.
DQPpe TIL Ethan Zuckerman, the man who created pop-up ads, has said sorry to the world for inventing one of the most detested forms of online advertising.
GY0rJ TIL it is illegal to fly faster than the speed of sound over the United States.