Voting on the first Tuesday in November might seem arbitrary, but there's actually a logical reason for it.

From battlefields to ballet stages, these five Native American leaders broke barriers and defied expectations.

Mankind has always manipulated nature, but in the last century, frightening technologies have warped the animal kingdom, turning cockroaches, cats, dolphins and even sharks into weapons of war.

Trick or treating is now innocent Halloween fun, but before kids went door to door, the holiday was all about mischief and mayhem.

From antiquity to today, brutal games have thrilled players and spectators alike. This episode of Dark Marvels explores the origins of history's deadliest bloodsports

Frankenstein author, Mary Shelley, is world renowned for her terrifying fiction, but few know that she had a dark secret of her own.

Boston and New York City compete to build the first subway system, which sends ripples through the mass transit system forever.

An up-close-and-personal look at two of the Civil War's most iconic military leaders.