Even the parts of our brains that don't control physical movement show a lot of rhythm, and that might be integral to how our brains...

Spray-painted subway cars, tagged bridges, mural-covered walls -- graffiti pops up boldly throughout our cities. And it turns out: it's nothing new. Graffiti has been around for thousands of years. And across that span of time, it's...

About 10% of the world population is left-handed. But why does handedness exist and what determines which hand is dominant? Scientists have suggested several theories, but the answer may well lie with evolution.

Jessi has a secret message she wants to share with Squeaks, but first they'll need to use some special ingredients to reveal it.

Dan Bricklin changed the world forever when he codeveloped VisiCalc, the first electronic spreadsheet and grandfather of programs you probably use every day like Microsoft excel and Google Sheets. Join the software engineer and computing...

In the animal kingdom, sex often involves more conflict than cooperation. The struggle between males and females leads to a host of weird adaptations, from chastity belts to anti-aphrodisiacs.



Want to learn more about the...

Over-the-counter pregnancy tests give potentially life-changing results with a pretty high rate of accuracy. But how do they work? Tien Nguyen explains how each test performs a scientifically rigorous, multi-stage experiment that goes...

About 10% of the world population is left-handed. But why does handedness exist and what determines which hand is dominant? Scientists have suggested several theories, but the answer may well lie with evolution.

Difficult emotions can get under your skin if you're not careful. Sport and performance consultant Jessica Woods calls this the "jumping cholla effect," inspired by a sneaky kind of cactus that detaches and burrows its spines into...

Negative campaigns—or campaigns that work by painting opposing candidates in a negative light—have been used for decades. But today, thanks to information that can be gained from social media, these campaigns may be even more effective...

Some dogs just seem to love watching TV. But are they really watching what we see?

Houseplants are great for decoration and cute Instagram pictures - plus they make for pretty chill roommates. As if that wasn’t enough, there is actually some evidence that houseplants can also be good for your mental health.

Work-life balance, says Nigel Marsh, is too important to be left in the hands of your employer. Marsh lays out an ideal day balanced between family time, personal time and productivity -- and offers some stirring encouragement to make it...

Today Hank kicks off our look around MISSION CONTROL: your nervous system.


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Sensory Input, Int
egration and Motor Output 1:36
Organization of
Central and Peri
pheral Systems...

We've found a microbe that might someday protect us from malaria parasites, and bees might have help with their jobs soon, thanks to bubble pollination!

Where science fiction becomes science fact - that is the place Hank is exploring in today's episode of SciShow. Many inventions we use today were first imagined in stories that described fantastical futures. Hank talks...

What do raindrops look like? Exactly how we drew them as kids, right? Wrong! Teardrop-shaped rain is physically impossible. This week I went inside a vertical wind tunnel to bring you the true shape of rain.

Hank and PhD candidate Casey Massena go deep into the chemistry of a molecule that Casey helped create! Then Jessi joins the show to show off Ecuador, one of her many conures!

Would you rather be bitten by a venomous rattlesnake or touch a poisonous dart frog? While both of these animals are capable of doing some serious damage to the human body, they deliver their dangerous toxins in different ways. Rose...

What shape do you most associate with a standard analog clock? Your reflex answer might be a circle, but a more natural answer is actually a torus. Surprised? Then stick around.

Lots of kids are afraid of the dark, and some adults still can't stand sleeping in the complete darkness. But why are we afraid of it?

Scientists today think reason and emotion aren’t at odds like they’ve traditionally been presented, and even rely on each other to help us get through this thing called life.

In a series of mind-bending demos, inventor Mary Lou Jepsen shows how we can use red light to see and potentially stimulate what's inside our bodies and brains. Taking us to the edge of optical physics, Jepsen unveils new technologies...

Neuroscientist Vilayanur Ramachandran outlines the fascinating functions of mirror neurons. Only recently discovered, these neurons allow us to learn complex social behaviors, some of which formed the foundations of human civilization as...