When a politician, sports team, or anyone else faces a defining challenge, it's referred to as a “litmus test.” What's litmus ...

With 433 properties in the National Park System, there’s no shortage of destinations to choose for your next nature-focused ...

If you collected Dragon Ball Z trading cards in the early 2000s, you could have a small fortune on your hands.

None of us are likely to get one of those movie contraptions where pulling down a specific book opens a secret room behind the shelves. But at least we have book nooks, which places the secret room in ...

In the 18th century, Swedish botanist Carl Linnaeus gave these symbols a new meaning. He used ♂ and ♀ in plant classification ...

Though it’s not as popular as the middle finger, the “devil horns” hand gesture is ubiquitous at heavy metal shows, where ...

Welcome to Kennections, a weekly quiz created by ‘Jeopardy!’ host and champion Ken Jennings. Welcome to Kennections, a weekly quiz created by Jeopardy! host and champion Ken Jennings. Here’s how to ...

The CIA's encrypted art sculpture has puzzled cryptographers for decades. The man with the answers is finally ready to clue ...

It features synonyms for 18 famous film titles—your job is to type the film’s real title in the blank. Here are the rules: ...

While some people may define literacy in strict terms as proficiency in reading comprehension, there’s often much more to it ...

The Eugenics Record Office thought pseudoscience could make more perfect humans. It led to unspeakable tragedy.

From a Yosemite icon to a Grand Canyon hidden gem, there are epic waterfall hikes to be found across the country.