HISTORY

Until two centuries ago, ice was just an unfortunate side effect of winter. But in the early 1800s, one man saw dollar signs in frozen ponds.

There's more to the Keystone State than cheesesteaks and the Declaration of Independence.

They owe a lot to China—and they used to be ladies-only.

The pages of the Renaissance-era medical text feature intricate flaps that lift to reveal the inner workings of the human body.

They found the remains of nearly 200 carnivorous animals, including golden eagles, pumas, jaguars, wolves, and rattlesnakes.

Neurotic bookworms rejoice: It's home to more psychologists and more bookstores per capita than any other city in the world.

We're still finding surprises in the notebooks he left behind.

Yale scientists analyzed leftovers from the 1951 fete, and discovered that the legendary dish was actually sea turtle.

Created by a paranoid duke, these cards were used for entertainment, not mystical divination.

His work may have caused joint inflammation in the artist's later years.

"Wives must understand that the life-giving fluid called the semen, which is produced in the creative organs of the man, is of great value in the upbuilding of his own body"

If you were serious about producing a male heir around the turn of the 20th century, there was plenty of questionable advice to follow.