Autumn Spanne

7 Amazing Facts About Human Blood

George Washington died after his physician treated his sore throat with bloodletting, but don't let that stop you from learning more about the human circulatory system.... READ ON

14 Facts About Feet

Those 52 foot bones do a lot of heavy lifting.... READ ON

Why Do Grown-Ups Have Wrinkles?

As we get older, we lose some of the stuff in our skin that helps it to stretch and then return to its normal place.... READ ON

Why Do Dogs Sniff Each Other's Butts?

Chemicals from special glands on a dog's rear end tell other dogs a lot about them. Here's why dogs sniff each other's butts.... READ ON

Why Doesn’t the Ocean Freeze?

Actually, it does! You just have to be in a really cold place to see it.... READ ON

Why Is Glue Sticky?

Glue is adhesive, which means it is sticky. It also has to be cohesive, meaning it sticks to itself. So how does glue do that?... READ ON

We are the only creatures on Earth that cry because of our feelings. Here is the reason why we cry.... READ ON

Why Are There No More Dinosaurs?

Scientists think a terrible event killed most of the dinosaurs off. But some remain—and they fly.... READ ON

Why Do Sour Things Make Me Pucker?

It could be your body's way of saying "watch out!" Here is the reason why sour things make you pucker.... READ ON

Why Are Feet So Stinky?

It’s not actually your feet that stink. It's actually the bacteria that lives on your feet that smells.... READ ON

Why Does My Heart Beat Faster Sometimes?

Your movements and your feelings can give your heart a little workout. Here is why your heart beats faster sometimes.... READ ON

Why Does My Stomach Rumble When I’m Hungry?

A gurgling, rumbling stomach doesn’t always mean that you’re hungry. It just means your digestive system is trying to do its job.... READ ON

Why Are There So Many Different Languages?

Human migration played a big role. Here are the reasons why there are so many different languages around the world.... READ ON

Why Are the Days Longer in Summer?

Did you know that when it’s summer in North America it is winter in some other continents, like South America and Australia?... READ ON

Why Do Cats Sleep So Much?

Cats spend a lot of time taking short “cat naps” that build their energy, yet keep them alert enough to jump up the moment they sense danger or excitement.... READ ON

Why Do Animals Have Whiskers?

From cats and dogs to rats and seals, animals use whiskers to help them find their way and follow their prey.... READ ON

Why Are There Shooting Stars?

Have you ever seen a flash of bright light streaking through the night sky? People around the world have different ways of explaining these so-called shooting stars.... READ ON

Why Does My Skin Wrinkle in Water?

Have you ever noticed that your fingers and toes get wrinkled when you’ve been soaking in water for a while?... READ ON

Why Do We Laugh?

Scientists don’t yet know all the reasons why so many different things cause us to laugh. But we do know laughter helps us to get along with each other.... READ ON

Why Do Astronauts Wear Space Suits?

Space suits don’t just make astronauts look cool. Without these special suits, astronauts wouldn’t be able to leave their spacecraft.... READ ON

Why Are Flamingos Pink?

It’s easy to spot flamingos. These amazing birds have long, skinny legs and a long, skinny neck to match.... READ ON

Why Do Things Float in Water?

I bet you know that wood floats but a rock sinks. But why? Let’s look deep inside each object at its molecules.... READ ON

Why Doesn’t My Bike Tip Over When I’m Riding It?

When people are learning to ride a bike, they often make big, jerky movements with the handlebars wheel and their bodies.... READ ON

10 Facts About Being a Climate Scientist—From Climate Scientists

What exactly is a climate scientist, and how do they make sense of the complicated systems that rule our lives on the planet?... READ ON

15 Facts About Maggots

Maggot therapy is making a comeback.... READ ON

15 Naturalists Who Died in the Field

Countless scientists, naturalists, conservationists, and support staff have died in the pursuit of knowledge that could protect vulnerable places and species, and enable people to live safer, healthier lives.... READ ON

8 Silkily Engineered Facts About Spider Webs

Relative to weight, the strength of a spider web rivals steel and Kevlar, the material used to make bullet-proof vests.... READ ON

Why Do I Get Cavities?

Your mouth is a busy place. There are hundreds of different kinds of bacteria living on your teeth, tongue and gums.... READ ON

Why Do Lizards Lose Their Tails and Regrow New Ones?

Scientists looking at geckos under a microscope have found out that some parts of the tail are weaker than other parts.... READ ON

Why Are There High and Low Tides?

Have you ever been to the beach and built a sand castle, then watched it wash away when the water came in?... READ ON

15 Blissfully Cool Facts About Ice

It's summer. Time to think about the science of the cubes clinking in your drink.... READ ON

Why Do I Sometimes Get 'Brain Freeze' From Eating Ice Cream?

Your body and brain are trying to figure out what to do about all that icy cold stuff you just swallowed.... READ ON

Why Are Some Farts Noisy?

Farts can make a lot of different noises. Some farts are high and squeaky. Some explode like a machine gun. Some don’t make any noise at all.... READ ON

Do Carrots Improve Your Vision? 15 Misconceptions About Your Eyesight

Let's clear up a few things.... READ ON

Why Does My Cut Itch?

Your skin protects you by keeping germs out of your body. But when something hard or sharp breaks through your skin, it makes a cut, or a wound.... READ ON

Scientists Find New Method to ID the Sex of a Dinosaur

We can thank a pregnant T. rex for the breakthrough.... READ ON

Listening to Yourself Eat May Help You Lose Weight

They call it the "Crunch Effect."... READ ON

15 Archaeological Sites Revealed—and Now Threatened—by Climate Change

As quickly as new discoveries are made, they are vulnerable.... READ ON

Why Am I Left-Handed?

Only about 10 percent of people are left-handed. If you’re one of them, you're part of a rare and special group.... READ ON

Oregano Significantly Curbs the Amount of Methane in Cow Burps

Finally, an herbal remedy we can get behind.... READ ON

Where to See the Monarch Butterflies Wintering in California Before They Leave

Thousands of orange and black butterflies are clustering for warmth amidst stunning scenery.... READ ON

'Social Robots' May One Day Help Your Doctor

Meet Nadine. She says she's "completely self-aware."... READ ON

15 Gorgeous Cave Paintings

While most cave paintings remain enigmatic, they provide important clues to daily life, religious beliefs, and culture change among prehistoric humans.... READ ON

10 Trippy Facts About Triops

Sorry, sea monkeys, but triops are so much cooler than you are.... READ ON

Funky Chicken Walk Can Indicate a Sick Bird

Why did the chicken cross the pen? No, seriously. That’s a legitimate scientific question.... READ ON

The Strength of Spider Web Glue Is Affected by UV Light

No one has yet made an adhesive based on the spider’s glue. Now we're learning how it's affected by UV light.... READ ON

Archaeologists Unearth Civil War Refuge for Escaped Slaves

They've uncovered a treasure trove of archaeological evidence: "There were literally dozens and hundreds of those things.”... READ ON

New Study Reveals How Brushing Your Teeth Helps Keep Your Heart Healthy

New research clarifies how bacteria in our mouths may lead to cardiovascular health problems.... READ ON

We're Running Out of Sand

A worldwide construction boom is sucking our global sand supply dry.... READ ON

5 Cool Tech Innovations 'Bioinspired' by Animals

From gecko feet to bird beaks, animals have "bioinspired" some remarkable technology.... READ ON

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