› added 4 years ago

150

TIL that wrasse (a kind of cleaning fish) can keep track of over 100 regular clients. They sometimes cheat certain clients, and if those clients get angry and chase them, they offer a complimentary fin massage. They can also outperform chimps on certain mental impermanence tests.

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via reddit.com

6EKDw TIL that you’re not meant to rinse with water after brushing your teeth. It washes away the fluoride and hence the protective action of fluoride.
vEXL TIL that some elevators have a mode called Sabbath service which let people use the elevator without pressing a button
xkko TIL The world is running low on Helium, which unless a new source is found, will be gone in 25-30 years.
6lvl TIL that 23% of the crew aboard Christopher Columbus’ ship “Santa Maria” was named “Juan”.
9JKp TIL Serial killer Albert Fish would embed needles into his groin and abdomen. After his arrest, x-rays revealed that he had at least 29 needles lodged in his pelvic region. He also hit himself with a nail-studded paddle and inserted wool doused with lighter fluid into his anus and lit it.