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TIL propane is actually odorless in its natural state. The odor comes courtesy of an additive called Ethyl Mercaptan. It’s added to the propane, so you can detect a leak and react accordingly.

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AD4ed TIL the OSIRIS-REx asteroid lander did not just land on an asteroid as it flew past, it's able to return to Earth and is actively returning a sample from the asteroid and is due to land in 2023.
nWw6P TIL the "AIR CHINA" written on Air China flight liveries is a calligraphy by China's former leader Deng Xiaoping.
R5BX4 Today I learned that Goku from the anime Dragon Ball has been voiced by the same voice actress, Masako Nozawa, since the first show started in 1986. She has voiced him in all the tv shows, video games and movies and also voices his sons. She is currently 88.
pB9N TIL that Nestle, one of the worlds largest confectionery companies, owns Jenny Craig.
M7kjK TIL Michael J. Fox and food writer Michael Pollan are brothers in law. Fox has been married to Pollan's sister Tracy since 1988.