Say ‘salut’ to the Italian polymath of the Reniassance, Leonardo da Vinci. When he wasn’t busy creating some of the most famous paintings in the world, da Vinci occupied himself with conceptualizing flying machines, concentrated solar power, an adding machine, and made substantial discoveries in anatomy, civil engineering, geology, optics, and hydrodynamics. In his free time, he dissected human corpses at the Hospital of Santa Maria Nuova, and made one of the first scientific drawings of a fetus in utero.