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Mathew Brady, U.S. National Archives and Records Administration, Public Domain, Wikimedia Commons

You can quote 'The Raven.' But how well do you know Edgar Allan Poe's quirky sense of humor and code-cracking abilities?

Ethan Trex


Edward Stojakovic, Flickr // CC BY 2.0

The polar vortex is famous for blasting arctic air south to the U.S. But what exactly is happening here?

Erin McCarthy






Express Newspapers/Getty Images

Martin Luther King Jr. earned a doctorate in systematic theology from Boston University in 1955. In 1989, archivists working with The Martin Luther King Papers Project discovered that King’s dissertation suffered from what they called a “problematic use o

Matt Soniak