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TIL Vegemite, a food spread made of leftover brewery yeast, was banned in some Australian prisons to prevent inmates from making moonshine. Also, because Vegemite's high concentration of ions and water can be used to conduct electricity, it's currently being researched to make edible medical sensors

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mxgPE TIL in psychology and behavioral economics, the endowment effect is the finding that people are more likely to retain an object they own than acquire that same object when they do not own it.
W1XX TIL that gray whales mating ritual involves a third “male escort” whale courting the female. Although the male escort equally vies for her attention, there is absolutely no aggression between the males. The birthing ritual, on the other hand, involves a second female whale assisting the mother.
Y7eWP TIL about the Diomede Islands - Big Diomede is in Russian territory, Little Diomede is in the U.S. They're just 2 miles apart, but due to the International Date Line, Big Diomede is 21 hours ahead of Little Diomede.
v9yj TIL chemists Lea & Perrins created the recipe for a fermented liquid condiment in the 1830s, however it wasn’t to their liking and was set aside and forgotten about. When the barrels were rediscovered many months later, the taste had mellowed into what is now known as Worcestershire sauce.
b674Z TIL Although an ace is usually associated with a pilot, there are also aces in the combat of tanks and submarines.