BIG QUESTIONS

California wildfires: Firefighters struggle with strained water system

What Are the Santa Ana Winds?

News reports warn about the Santa Ana winds and their power to turn modest wildfires into conflagrations. Here’s why these wind patterns in Southern California can be so destructive.

The Stillson wrench revolutionized plumbing.

Why Do We Call It a “Stillson Wrench”?

The imposing pipe wrench with teeth was once made out of wood.

They're a must-have in the wintertime for a reason.

All-Season Tires vs. Snow Tires: What’s the Difference?

Are snow tires really worth it? Discover the real differences with all-season tires, including affordability, rubber tread, and more.

Are Eggs Dairy?

What are eggs, really? It's complicated.

MRSA bacteria bound to a neutrophil, a type of infection-fighting white blood cell.

What Is Antibiotic Resistance?

Public health officials are concerned that we could move back into a situation like that of the early 20th century, before antibiotics were discovered.

Here‘s how to keep your canine clean and happy.

How Often Do You Need to Bathe Your Dog?

The answer varies based on your pet‘s coat, activity, and skin type.

What’s a wazoo, and why do we invoke it?

Why Do We Say “Up the Wazoo”?

On the possible origins of ‘wazoo,’ and why things are said to tumble out of it.

Why Do Humans Have Toenails?

Discover more about the origins of toenails—plus the real reasons why your toenails may be getting thicker and changing colors.

Why Do We Make New Year’s Resolutions?

Every time a new year rolls around, people set out to better themselves. But why do we make these promises to ourselves, and where did this tradition come from? We can start by blaming the ancient Babylonians.

There‘s a time and place for black tea (left) and herbal tea (right).

Decaffeinated vs. Caffeine-Free Tea: What’s the Difference?

“Caffeine-free tea” isn't actually tea at all.

Who First Said “The Customer Is Always Right”?

The proverb that empowers rude shoppers has been going strong for over a century. Who’s to blame?

A dish of Hoppin’ John is a delicious way to start the new year.

Why Is It Lucky to Eat Black-Eyed Peas on New Year’s Day?

The humble black-eyed pea has become a symbol of good luck and prosperity in Southern New Year's traditions.

What‘s the Difference Between Hail, Sleet, and Freezing Rain?

Frozen precipitation comes in many forms, and they all pose unique threats.

Drop this fact at your New Year’s Eve party.

Why Do We ‘Ring In’ the New Year?

The meaning of ‘ring in the New Year’ is now mostly metaphorical, but it used to involve literal ringing.

Why Don't Cars Have Pop-Up Headlights Anymore?

The ‘hidden headlamps’ were having a moment. Then pesky pedestrian safety cramped their style.

Next time someone confuses the two drinks, you‘ll know how to correct them.

Champagne vs. Prosecco: What’s the Difference?

Don’t let wine aficionados hear you confuse these two sparkling beverages.

She's probably looking at one of our map or dog pieces.

Our 15 Most Popular Stories of 2024

Content about maps, fascinating facts about everyday objects, language, and dogs was a hit among Mental Floss readers this year.

Experts say that it pays to proceed with caution.

Is It Really Possible To Have a Heart Attack Shoveling Snow?

Worried about the health risks that come with shoveling show? Here's what you need to know, plus a few tips for how to do it safely.

Why Do We Count Down to the New Year?

The ritual of marking time until the new year hits is a relatively recent phenomenon. It also has a lot to do with NASA.

What’s the Difference Between Flapjacks and Pancakes?

What is a flapjack? If you’re in England, it’s not a fluffy round cake made from batter and fried in a pan.

Why Do We Say “Jinx”?

If you’ve ever been jinxed into owing someone a soda, you should know why.

How do these two famous vampires compare?

What’s the Difference Between Dracula and Nosferatu?

Ahead of Robert Eggers’s adaptation of ‘Nosferatu,’ here’s a breakdown of the differences and similarities between the two iconic bloodsuckers.

Pink slips have had a lot of different meanings over the years.

Why Is Being Fired Called ‘Getting the Pink Slip’?

Getting laid off has long been associated with getting a fancy pink invitation to the unemployment line. Why?

What Exactly is Christmas Tree Flocking?

There’s something so nostalgic about a well-flocked Christmas tree. Here’s how professionals manufacture this holiday sight for sore eyes.