Sharks are boneless. Their skeletons are made of lightweight cartilage, which rarely fossilizes, so museum displays usually feature only their preserved jaws and teeth.

According to a study, dunking an Oreo in milk for three seconds gives you the optimal balance of sogginess and structural integrity.

Elvis Presley's manager sold 'I Hate Elvis' badges to profit from fans who disliked Elvis and wouldn’t buy his official merchandise.

According to a 2010 study, people fluent in multiple languages almost always swear in their native tongue.

At the Poison Garden of Alnwick Castle in England, many of the plants are so deadly they're grown in cages — even touching or smelling some of them can kill you.

While they might look the same, Jenga blocks have subtle differences in dimensions to make their construction less stable. Each brick is a different size and weight, so no two games are alike.

A study by the University of Glasgow found that, like humans, dogs have individual music preferences — but they generally prefer reggae and soft rock over other genres.