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The rules for donating blood have recently changed.

A strawberry moon rising over the Manhattan skyline.

June's strawberry moon will be accompanied by an extra-bright Venus this Saturday.

'Weird Tales' was a pioneer in fantasy and horror.

The pulp magazine, which turns 100 this year, inspired Stephen King and made a star out of Conan.

Mopping may be a necessary task, but it’s not inherently clear how often we’re supposed to be making it happen. That’s why Mental Floss and Roborock have teamed up to get to the bottom of it.

Presented by: Roborock

The Smurf-colored trio came up in the counterculture. Then Intel came calling.

Contestants chasing cheese down Cooper’s Hill during 2022's Cheese-Rolling contest.

Nineteen-year-old Delaney Irving was unconscious when she crossed the finish line of Gloucester's 2023 cheese-rolling contest.

The best children’s books of all time include works by J.R.R. Tolkien, Maurice Sendak, Louisa May Alcott, and more.

The first African American dictionary of its kind is due in 2025.

The years-in-the-making Oxford Dictionary of African American English will offer proper attribution to words and phrases that originated in Black culture.

You'll get vivid picture quality, even through rainstorms.

The Wyze Cam v3 is a versatile security camera that works indoors and outdoors, and you can get it on Amazon for just $33.

Not a lot of time to clean? Not a problem.

Mental Floss and Roborock have teamed up to share six easy tips for cleaning your house in no time.

Presented by: Roborock

The halibut in this ceviche "cooks" in a simple lime marinade.

Loop Biotech's eco-friendly mushroom coffins are designed to decompose.

Where does this literary device come from, and why is it named after a fish?

The figurative phrase is more than 200 years old, but the obscure etymology of a 'red herring' is a fishy story that is itself a red herring.

Tennis star Billie Jean King has had a lasting influence on sports and beyond.

Billie Jean King is one of tennis’ most celebrated athletes. But she also championed gender equality efforts and fought for equal pay in sports.

Whether it's the proximity to the sea or a slice of history that pulls you in, these lighthouses offer something for everyone.

Man reading from a microfilm machine, which uses a similar technology to Brown's "Readies."

Machines called “Readies” were writer Bob Brown’s answer to “talkies” in the 1930s.

Before you head to the beach, don't forget to apply sunscreen to these key spots.

Even if sunscreen is part of your daily routine, there might be some major areas—like your eyelids—where you’ve been forgetting to apply it.

The red velvet origin story is a widespread urban legend.

From what makes red velvet cake red (and velvet, for that matter) to its highly dubious origin story, here’s what you need to know about this delicious dessert.

Leonardo da Vinci’s ‘The Last Supper’ (black border added).

Leonardo da Vinci's "The Last Supper" is one of the most admired, most studied, and most reproduced paintings the world has ever known—and it has inspired some wild theories.

Enlist the help of a robot vacuum to make cleaning a snap.

Mental Floss and Roborock have teamed up to share six simple tips for keeping your house clean without compromising cleanliness.

Presented by: Roborock

AnnaPustynnikova/iStock via Getty Images

Ignacio "Nacho" Anaya García invented his namesake bar snack while working in a restaurant near the Texas-Mexico border.

Unpacking the reason hyperlinks are blue requires dipping into early internet history.

Before venturing outdoors, read up on the most common myths about ticks.

Charred gunk on your grill can inhibit performance and lead to a bummer of a burger. Here’s how to fix it.

10 Myths About Donating Blood, Debunked

Venus and a Strawberry Moon Will Brighten Skies This Weekend

8 Things You Might Not Know About 'Weird Tales' Magazine

You’re Not Mopping Your Floors Enough

Dye Hard: How Blue Man Group Took Performance Art Mainstream

Canadian Woman Wins First Prize in Cheese-Rolling Race After Knocking Herself Unconscious

The 25 Best Children’s Books of All Time

Scholars Have Released the First Words Chosen for The Oxford Dictionary of African American English

This Security Camera Is Great for Outdoor Areas and Costs Just $33

6 Simple Tricks For Cleaning Your House in Half The Time

This Halibut Ceviche Is the Easiest Seafood Dish You'll Make This Summer

Mushroom Coffins Are the Latest Green Burial Trend

Where Did the Phrase 'Red Herring' Come From?

11 Facts About Billie Jean King

10 Amazing Lighthouses You Can Rent

Before E-Readers, a 1930s Writer Reinvented the Book With “Readies”

6 Areas You’re Probably Forgetting When You Use Sunscreen

A Delicious History of Red Velvet Cake

15 Facts About Leonardo Da Vinci's ‘The Last Supper’

6 Simple Ways to Keep Your House Spotless Without Compromising Cleanliness

Ignacio Anaya García: The Genius Who Invented Nachos

Why Are Hyperlinks Blue?

11 Myths About Ticks, Debunked

It’s Grilling Season, Which Means It’s Also Clean-Your-Grill Season—Here Are the Best Ways To Do It