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Wikimedia Commons Dr. Giovanni Aldini When Giovanni Aldini was a child, he would watch his uncle, Dr. Luigi Galvani, perform experiments. For more than ten years, Dr. Luigi Galvani had devoted his studies to frogs. Specifically, dead frogs. He had studied the way that the legs of the unfortunate amphibians were connected, and realized that

Nathaniel Currier/Library of CongressAn 1856 cartoon satirizing James Buchanans role in the Ostend Manifesto. In 1858, Abraham Lincoln famously said, A house divided against itself cannot stand. At the time, the North and the South were deeply divided over the institution of slavery. The South supported the expansion of slavery outside its current bounds. The

Anwar Hussein/WireImageThough tumultuous, the marriage between Antony Armstrong-Jones, a.k.a. Lord Snowdon, and Princess Margaret would catapult British Royal engagement into the modern era. His was something of a gender-reversed Cinderella story: a lonely boy of small nobility, isolated and marked from a childhood illness, met a lovely young princess. Charmed by his insouciance and rakishness,

Theres a virtually endless supply of bizarre facts about North Korea: just three percent of the countrys roads are actually paved; its illegal for mens hair to be longer than two inches; and the official biography of former leader Kim Jong-il states that he was able to control the weather with his moods.

Patrick DruckenmillerThe largest-known collection of dinosaur tracks in Alaska, this site has been dubbed The Coliseum. Known today as one of North Americas greatest nature preserves, Alaskas Denali National Park is famous for its vast mountains, pristine lakes, and abundant wildlife including titans like 1,500-pound moose and ten-foot-tall Kodiak bears, the largest on Earth. But