The Most Popular Sport in North America 900 Years Ago

Beneath the freeways of East St. Louis in Illinois there lie the ruins of a city built nearly a millennium ago, around towering earthen pyramids. Today called Cahokia, it held as many as 40 thousand people, and their influence spread throughout the southeast U.S. — mostly due the popularity of a game called chunkey. » 7/14/14 3:50pm 7/14/14 3:50pm

How to Build an Army in Space

What kind of military would you need to wage a war in space? You've got your Napoleonic space navies, which can lay waste to one another in empty sections of space. You've got space marines, who are armored up and ready to kill anything that moves. And finally, you've got the fighter jocks, who run interference and… » 6/06/13 2:03pm 6/06/13 2:03pm