31 conocimientos antiguos que la ciencia no puede explicar

31 Knowledge Forgotten by Humanity. ►Subscribe to the channel: https://geni.us/eZcCYJ History is full of seemingly inexplicable technical developments. Indigenous Ecuadorians produced platinum objects more than two thousand years ago, iron that has resisted corrosion and oxidation for more than 1,500 years, or aluminum pieces from 1,700 years ago, when this metal could not yet be efficiently obtained in the 19th century. We are going to dedicate this video to forgotten knowledge and ancient technical feats that are astonishing because of how absurd they seem. ----------------------------------------------------------------- Add us: Facebook ► https://geni.us/xS4dD Instagram ► https://geni.us/ZLr9j