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TIL those concrete dividers on highways and streets are called Jersey barriers. Originally invented in the 1950s for use in New Jersey, they were first poured in place but are now pre-made and modular or even plastic. Taller varieties are used as defenses outside US military bases.

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a8YZA TIL: dumbo octopuses are named after the famous Disney elephant. Thet live at least 13,100 feet (4,000 m) below the surface. Dumbo octopuses move by slowly flapping their ear-like fins, and they use their arms to steer.
R5Zx1 TIL in traditional Chinese culture, hanging was believed to let a person’s spirit haunt and torment survivors and was used as revenge by women and as defiance by powerless officials. They would often approached it ceremonially, including proper attire.
M78rb TIL in 2005, a L.A. Dodgers pitcher offered the Miami Marlins batboy $500 if he could drink a gallon of milk in under an hour without throwing up. The batboy drank the milk in 59 minutes but threw up outside the clubhouse. The episode prompted the Marlins to suspend the batboy for 6 games.
wLQWM TIL that Ruby-throated Hummingbirds are able to fly across the Golf of Mexico, a distance of 500 miles, in one 20-hour non-stop flight. This requires more calories than the bird's weight, so they prepare by doubling their fat mass. They expend the entire caloric reserve during the flight.
nd7W TIL Japanese porn star Shimiken is one of only 70 active male porn stars in Japan. He performs in up to 6 movies a day and hasn’t had a vacation in 7 years