In 2007, archaelogists unearthed two skeletons from the Neolithic period locked in an eternal embrace and buried outside Mantua, Italy, just 25 miles south of Verona: the city where Shakespeare set the star-crossed tale of Romeo and Juliet. They are thought to have died young because they both had all their teeth intact. But beyond that, the skeletons are a mystery.

(Source: 1000scientists)