TIL that the obelisk that stands at the centre of Saint Peter’s Square in Vatican City, is a four thousand year old Egyptian obelisk that was brought to Rome from Alexandria by Caligula in 37 AD.

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

Hy pick's