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TIL that the formal name for baby teeth in mammals is "deciduous" teeth, the same word used to refer to trees who uniformly shed and regrow their leaves.

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w6bP TIL Costco hasn’t changed the price of its $1.50 hot dog and soda combo in 30 years.
grKg8 TIL in 1926 Harry Houdini argued in congress for four days trying to convince them to pass his bill, House Resolution 8989, that would outlaw fortune-telling in the District of Columbia. The arguments nearly got physical and police were called several times.
LkJdm TIL of Helen Foley, a 7th grade English teacher who encouraged the class clown to join public speaking activities. Rod Serling eventually joined the debate team, wrote for the school's paper, and went onto to have a career in early radio & TV
a8L7A TIL A duel was once fought in Paris where both men were suspended in the air by balloons, trying to shoot each other down.
YgQv TIL studies show that when traditional intersections were replaced with modern roundabouts in the USA, there was a 37% reduction in overall collisions, 75% reduction in injury collisions, 90% reduction in fatality collisions, and 40% reduction in pedestrian collisions.