Weird Science
How To See Colors That Don’t Exist
Turns out there are six of them.... READ ON
Peacock Feathers Are Even More Majestic Under a Microscope
Photographer Waldo Nell captures the iridescent beauty of peacock feathers under the microscope. His work transforms a familiar object into abstract landscapes and still lifes. We hope you’ll enjoy the stunning result.... READ ON
Family Cracks Open Chicken Egg to Find Another Egg Inside
The phenomenon is rare but not unheard of.... READ ON
Why Do We Close Our Eyes When We Sneeze?
We don't actually have a definitive answer as to why, but hit play for the best guesses that research gives us.... READ ON
The Body
How Our Eyes See Everything Upside Down
So why doesn’t the world look that way?... READ ON
The Global Biodiversity Atlas Reveals the Secrets of Soil
There’s a lot of life under our feet—and now we can appreciate that more than ever.... READ ON
Scientists Track Microbe Transmission from Mother to Infant
“We know the infant increases [its] microbial diversity after birth and will continue doing so until being an adult,” senior study author Nicola Segata tells mental_floss. “We needed to understand from where microbes are coming in the first place.”... READ ON
Scientists Use Stem Cells to Regenerate Layers of a Human Heart
A recent study from Penn State details how researchers coaxed ordinary skin cells to grow into heart cells.... READ ON
Miss Cellania
5 Strange Microbes (and 1 Bonus Organism)
The world is teeming with life, and we're always discovering new species—including some that stretch the limits of how we view and classify biological life forms. Here are a few that clearly don't play by the rules.... READ ON
The Body
8 Facts About the Ankle
8. You might want to rethink an ankle tattoo.... READ ON
Stones, Bones & Wrecks
How the Global Bird-Poop Trade Created a Traveling Mummy Craze
Bird poop has been a favored fertilizer for centuries—and, it turns out, is an excellent preserver of human flesh.... READ ON
Can Mental Disorders Predict Physical Illnesses?
"The most substantial associations with physical diseases preceding mental disorders included those between heart diseases and anxiety disorders, epilepsy and eating disorders, and heart diseases and any mental disorder."... READ ON
Scientists Have Found a Possible Cause of Severe PMS
Dysfunctional gene expression may make some people hypersensitive to sex hormones like estrogen and progesterone.... READ ON
15 of the World’s Funkiest Fungi
There's a big wide world beyond common molds and mushrooms—and some of it is very strange.... READ ON
Stones, Bones & Wrecks
Here's What a Neanderthal's Voice Might Have Sounded Like
Less grunting, more hoarse screaming.... READ ON
The Body
No, Scientists Have Not Found a "New Organ"
What they've done is make a convincing case for reclassifying the mesentery as a single, continuous organ.... READ ON

Romance novelist Barbara Cartland was Princess Diana's step-grandmother.

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