Spanish conquistador Pedro Arias Dávila founded Panama City.
Source
Kristofer Helgen announced the discovery of the olinguito, a mammal of the raccoon family Procyonidae.
Mainz Psalter was published, making it the first book with a printed publication date on it.
New Zealand's All Blacks played their first international test against Australia at Sydney Cricket Ground.
Bahrain declared independence from Britain.
Ohio State University's Big Ear radio telescope detected a deep-space radio signal.
