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TIL the lunar surface contains 1.1 million metric tons of helium-3. Just 25 tons would meet all of the US energy needs for a year. Helium-3 fusion produces charged particles which are not radioactive. Helium-3 is also renewable, being constantly deposed by solar winds on the surface of the Moon.

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L9Pm TIL Paul Van Riper gained notoriety after the Millennium Challenge 2002 wargame where he easily sank a whole US carrier battle group in the simulation with an inferior Middle-Eastern “red” team in the first two days.
Xbr TIL as a young girl Jeanne Calment, confirmed to have live longer than anyone else in history (and whom died in 1997), met Vincent Van Gogh and remembering him as “Dirty, badly dressed and disagreeable”.
nBMo TIL that in Eve Online a player set up an in-game bank that operated legitimately for several months. The bank’s founder then stole nearly 790 billion units of in-game currency, nearly $170,000 in real world dollars. This was all perfectly legal.
E1W9d TIL "Saudade" is the word for being nostalgic about past relationships that are hard to let go. It's the recollection of feelings/experiences/relationships/etc that brought happiness, but also the pain of separation from them. It acknowledges that longing for the past would detract from the future.
Z8X4o TIL Theo Jansen has been creating strandbeesten, which are moving kinetic structures, sometimes wind-propelled, that resemble walking animals. All of his models are based on a system of triangles and connecting links which convert the rotation of an axle into a stepping motion of six or more legs.