The word "unfriend" appeared in print all the way back in 1659.
Matt Soniak answers today's Big Question.
With the Sochi Olympics underway in Russia, we thought we'd take a look back at some of the Winter Games' wildest and most unpredictable moments. Each of these wins gold for insanity.
In case you weren't obsessively refreshing mentalfloss.com all week, here's what you missed.
Radioactive junkyards remain dangerous for millennia. So how do you keep future generations from all that toxic trash? With a sign, of course!
On February 8, 1914, famed cartoonist Winsor McCay demonstrated before a live audience his considerable talents “controlling” Gertie, the “only dinosaur in captivity.” A theatrical release followed, w
Here are a collection of sketches that never got the full "Live from New York" treatment—for one reason or another.
The Olympic rings are everywhere this month, from the Athletes' Village in Sochi to cereal boxes in the U.S. Here's a look at what they're supposed to symbolize.
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