35 "Facts" You Learned in School That Are Completely Wrong

Contrary to what you were probably taught in elementary school, Christopher Columbus was apparently smarter than what we give him credit for. The Italian explorer knew the world was round even before embarking on his expedition. The fact that the world was a sphere was actually known 1,300 years before Columbus set sail, but it is true that many Europeans did start to believe the flat rumors during the Middle Ages.