Mental Floss

BIG QUESTIONS

ThinkStock

Helium's atomic number is 2 and its atomic weight is 4.002602. Its boiling and melting points— -452.1°F and -458.0°F, respectively—are the lowest among the elements. It is the second most abundant element in the known universe (after hydrogen). And it mak

Matt Soniak


ThinkStock

Whenever I cry, my beagle, Sadie, jumps into my lap and nudges me with her nose. Is Sadie’s intuitiveness unique, or can dogs really understand human emotions?

Meghan Holohan


ThinkStock

When you get home, you cover those fancy patterns up with a sheet. But those graphics are there to catch your eye in the showroom, not at home. The mattress business is extremely competitive and very confusing for the average consumer.

Kara Kovalchik




thinkstock

“I’ve only got 24 hours of living, and I ain’t gonna waste ‘em here!” groans a disgruntled housefly during a hilarious scene in Pixar’s A Bug’s Life. But do those pesky insects really brandish a day-long life expectancy?

Mark Mancini
Thinkstock

Reader Erica emailed to say, “I heard on Twitter, from one of those 'amazing facts' accounts, that cows moo in regional accents. Is that true?”

Matt Soniak
thinkstock

Let’s part the underpants-shaped veil surrounding urination information. Let’s learn about peeing.

Kate Horowitz






ThinkStock

The generic name “Pol” for a parrot can be traced back to England since at least the early 1600s. In his 1606 comedy Volpone, Renaissance playwright—and close friend of William Shakespeare—Ben Jonson assigned many of the characters animal personas which r

Kara Kovalchik


getty images

Furbys were all the rage in the late nineties—1998 alone saw the sale of a whopping 27 million units—and remain popular to this day. But did you know that they’ve actually been cited as a national security threat?

Mark Mancini


ThinkStock

Well-meaning geologists ended up confusing plenty of folks when they named stalactites and stalagmites. Both of these similar-sounding structures—typically formed in limestone caves—are capable of stretching over 27 feet in length. But what's the differen

Mark Mancini


Getty Images

If you watch the speed skaters during this year’s Winter Olympics, you’ll certainly notice something strange about the footwear they’re sporting. With a hinged blade that moves independently from the boot, modern speed skates look nothing like hockey or f

William Herkewitz


ThinkStock

As any kid with a mason jar can tell you, the honeybee isn't the smartest animal on the planet. But oddly enough, a honeybee colony is actually pretty intelligent. How does the group make decisions when the individuals can't?

William Herkewitz


ThinkStock

Some people are like homing pigeons: Drop them off anywhere, and they’ll find their way around. Other people, though, can’t tell when they’re holding a map upside down. Are the directionally challenged just bad learners? Or are some of us just lucky to be

Lucas Reilly
Getty Images

Before Sochi was selected as the host of the 2014 winter Olympics, not many people had heard of it, so it didn't have a widely known English pronunciation.

Arika Okrent
ThinkStock

Caffeine isn’t the kickstarting jitter-drug you think it is. If anything, it’s a sneaky imposter.

Lucas Reilly