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TIL in 1972, Nintendo launched the "Lefty RX", a remote-controlled car that could ONLY make left turns due to a deliberately cheap design. It ended up being a tremendous success, and influenced Nintendo focusing on fun over next-gen-tech in future video game consoles.

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ANbPd TIL the concept and name for the atom bomb was first conceived of by H. G. Wells in the 1914 novel The World Set Free. The story may have influenced the development of the real life weapons, as physicist Leo Szilard had read the novel before conceiving of the neutron chain reaction.
wGgM TIL the chains that you can see hanging under school buses and trucks are there to provide traction in snow. With the flip of a switch, the chains will lower automatically and the centrifugal force sends the chains into action. [Video]
16e6O TIL that although intensely private, Joe DiMaggio allowed a children's hospital to use his name and image on condition that they never turn away a child because of inability to pay. The deal was struck with a promise and a handshake.
W7OkA TIL that ctenophores (comb jellies) have been determined in 2023 to likely be the earliest branch of Animalia (earlier than sponges), after a chromosome study found they share many chromosomal features with non-animals. Thus, it might mean the ancestor to all animals looked similar to a comb jelly!
R5PK6 TIL: The "Great Oxygenation Event" is responsible for Minnesota's Mesabi Range and other commercially viable iron deposits around the Great Lakes and the world. Iron dissolved in ancient seas precipitated during the Precambrian age forming thick layers of sedimentary rock.