People ask Google everything under the sun. One of the most commonly searched questions in the world is “Why Is the Sky Blue?” Allow us at SciShow to explain.

Because exercise isn't essential for short-term survival, we don't exercise enough, so we need to reincorporate purposeful physical activity into our lives.

When you're feeling burned out as an activist, what's the best way to bounce back? TED Senior Fellow Yana Buhrer Tavanier explores the power of "playtivism" -- the incorporation of play and creativity into movements for social change....

Professor Fukan_, the famous scientist, has embarked on a new challenge - piloting around the world in a plane of his own design. There's just one problem: there's not enough fuel to complete the journey. Luckily, there are two other...

In this episode of SciShow we look at the most fascinating birds that hover!

Check out the "What is a Day?" interactive video at
href='https://labs.minutelabs.io/what-is-a-day/' target='_blank' rel='nofollow'>at


It's super cool!! (and made by Jasper Palfree & the MinuteEarth/MinutePhysics...

Have you ever fallen down and had trouble catching your breath? That's called "getting winded" and Jessi and Squeaks are here to explain what to do when it happens.

A phone call to a US prison or jail can cost up to a dollar per minute -- a rate that forces one in three families with incarcerated loved ones into debt. In this searing talk about mass incarceration, criminal justice advocate and TED...

If you live in the United States, you may live in the Eastern Standard Time Zone. Or maybe you live in Mountain Standard Time or one of the other standardized time zones. But these time zones have not always been around. In fact, it's a...

SciShow Space explores the origins of Earthquakes that aren't on Earth. Moonquakes and Marsquakes can happen, too!

How Our Honey is Made

You know how resolutions often go: you set a goal and start strong ... then the motivation runs out and feelings of frustration and shame creep in. The struggle is real -- but what if it doesn't have to be? Sociologist Christine Carter...

Ever wonder how the heart symbol came to stand for the actual heart? And why do we speak of the heart as the seat of love, when love really happens in our brains? Is it true that animals only get a billion heartbeats? This week, we give...

Do you remember having a cold in 5th grade? Or the flu a couple years ago? Your immune system does. Our bodies hold many levels of immune defense. Millions of B cells and T cells and antibodies are constantly on patrol for germs and...

In 1967, researchers gathered to answer a long-running scientific question: just how long is a second? It might seem obvious at first. A second is the tick of a clock, the swing of a pendulum, the time it takes to count to one. But how...

Three Simple Ways to Time Travel

Taking that internship in a remote mountain lab might not have been the best idea. Pulling that lever with the skull symbol just to see what it did probably wasn't so smart either. But now is not the time for regrets because you need to...

Spit is critical for our health. Actually.

We’re picking up where we left off last time, exploring the “ethics of care” and how it applies to extreme poverty. Are we responding to global poverty in a moral way? Philosophers like Peter Singer argue that we have an obligation to...

How DO you make a digital clock?

Have ever wondered how digital illustrations are made? This video explains the basics.

Remember that guy from 300? What was his name? ARG!!! It turns out our brains make and recall memories in different ways. In this episode of Crash Course Psychology, Hank talks about the way we do it, what damaging that process...

Does your heart rate have an upper limit and could you ever reach it?

"Dance can elevate our human experience beyond words," says Judith Jamison, artistic director emerita of the Alvin Ailey American Dance Theater. In between performances of excerpts from Alvin Ailey's classic works "Revelations" and...