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TIL that when Hitler forced the French to surrender during WW2 he did so on the site where the Germans were forced to surrender in WW1. Not only that but he found the same train carriage used in WW1 and forced the French to sign a surrender in that same train carriage.

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nJg7 TIL huge amounts of renewable energy can be stored over a long period of time by using Pumped Storage Hydropower, where water is pumped up a hill with renewable electricity then sent back down the hill to generate on demand clean electricity at up to 80% efficiency.
5Vd9B TIL Mary Shelley, author of Frankenstein, which is considered to be the first science fiction, gothic horror novel also wrote “The Last Man”, about a global pandemic caused by a bubonic plague that devastates 21st century Europe, thereby innovating the post-apocalyptic and dystopian fiction genre
XEkJ8 TIL in 2014 researchers in the U.k developed an app called, "Spider in da house", which helped identify house spiders. They discovered the peak month of spiders moving indoors is September and most are males seeking mates.
awOx9 TIL the former Bloods and Crips gang leaders made peace with each other and started an organization to promote peace in their communities. They’re now training former gang members and community leaders to help younger generations.
wNpY TIL of tetrachromats, people who have four different cone cells instead of three, allowing them to see a hundred times more colours than normal trichromats.