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TIL A fully loaded Kindle weighs 10^-18 grams more than an empty one

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noVG TIL there is such a thing as one-way bulletproof glass. This allows you to return fire through the glass while still keeping you protected from the attacker (your shot leaves a bullet-sized hole, but doesn’t compromise the rest of the shield).
nVvr TIL, the book “to train up a child” by Michael Pearl encourages abusing your child and using necessities (water, food, etc…) to control them. It has been linked to three deaths.
K5a9 TIL math dyslexia is a real, diagnosable condition called dyscalculia.
GAv1Q TIL body cameras are being marketed for hospital workers in the U.S. and there are privacy concerns that this will cause footage of a patient's most intimate and private moments to be accessible by numerous hospital employees, hackers, and criminals.
6ZJZ TIL In England, antidepressant prescriptions have increased 108% in the last 10 years, with a 6% increase in 2016 alone.