tested.com

p8ABe TIL Popcorn was not allowed in movie theaters before 1927. With ornate architectural designs and costly seats, theater owners believed that popcorn was messy and would ruin the first-rate atmosphere they strived to create. When movies added sound, owners discovered the profitability of popcorn.
4Xnlg TIL that brass door knobs automatically disinfect themselves after roughly 8 hours due to the 'oligodynamic effect'
9Ydo6 TIL Astronauts can’t cry effectively in space. Rather than gravity pulling the tears down as it does on earth, the tears congeal in their eye and sting.