TIL the Nazis tried to make a sun gun, or sonnengewehr. They would launch a 100-meter-wide concave mirror into space and use it to reflect sunlight onto the enemy, burning cities, boiling reservoirs and (pretty much) melting people.

https://www.pghcitypaper.com/pittsburgh/study-says-renewable-energy-power-plants-will-overtake-natural-gas-plants-by-2035/Content?oid=15834618

Hy pick's