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TIL that scientists used to think bismuth was the heaviest non-radioactive element. In 2003, it was discovered to be radioactive; but its half life is a billion times longer than the current age of the universe.

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e0Kjg TIL that honey bees can tell different human faces apart from one another
PBVE TIL Early movie theaters in Japan hired benshi, storytellers who sat next to the screen and narrated silent movies. They were descendants of kabuki jōruri, kōdan storytellers, and other forms of oral storytelling. With the advent of sound in the early 1930s, the benshi gradually disappeared.
6ZEX TIL ravens have been observed calling wolves to the site of dead animals so that they will open the carcass and leave the scraps more accessible to them.
grMaW TIL humans are the cause of an ongoing mass extinction event known as the Holocene Extinction
Oo7Zg TIL In 1900s, Minnie M. Cox, the first African-American woman postmaster in the United States, was forced to resign due to threats of physical harm from local white citizens. President Theodore Roosevelt, feeling Cox had been wronged, closed the post office and continued to pay her salary.