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TIL Treehouse attachment bolts are specialized bolts engineered for treehouse construction. Since treehouses are subject to frequent load reversal produced by winds, TABs must be made of spring steel. The bolts are able to support from between 9,000 and 12,000 pounds

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0dgdM TIL Cans of diet coke will float in water, regular coke cans will sink. regular coke has sugar, which makes it more dense than water, so they sink. Diet coke don’t have sugar. Instead, they use artificial sweeteners, which makes it less dense than water, so they float.
nWwJd TIL of Edgar Nollner, who, upon his death in 1999, was the longest surviving musher of The Serum Run - a mission to deliver diphtheria antitoxin by dog sled to an Alaskan town of Nome. During his later years, Edgar was married twice, had 23 children and over 200 grandchildren.
wWW7 TIL that Princeton students did vastly better on a series of “trick” math questions when the questions were printed in a small font and a washed-out gray print. The difficulty of reading the questions slowed them down enough to make them think carefully about the answers.
PXAG TIL There is a film called Waterloo(1970) that used 15,000 real Soviet soldiers as extras who spent months learning Napoleonic formations and how to use a musket. It is also very faithful to actual history.
Eayw TIL in 2013, an HGTV viewer (and nurse) wrote in and said she spotted a lump in the neck of a show host and she was concerned about it. It was later discovered to be thyroid cancer. He credits her with saving his life.