Regular brushing and flossing might not just keep your mouth in good shape—they might also be good for your brain.

Even if you're Mel Gibson or Kanye, it's probably best to not wear all of your emotions on your sleeve. In this episode of Crash Course Psychology, Hank talks about these things called "Emotions". What are they? And why do we...

We have the technology! We can rebuild...ourselves! Human interface technologies like Google Glass, robotic prosthetics, and bionic eyes have the potential to help people recover lost abilities, but also to grant us new abilities. Will...

In this gripping talk, lawyer Jason McCue urges for a new way to attack terrorism, to weaken its credibility with those who are buying the product -- the recruits. He shares stories of real cases where he and other activists used this...

Where does wealth come from, who creates it and what destroys it? In this deep dive into global economics, Mariana Mazzucato explains how we lost sight of what value means and why we need to rethink our current financial systems -- so...

Are you in control of your choices? Magic tricks might reveal otherwise, says scientist and illusionist Alice Pailhès. Watch closely as she performs magic tricks that unveil how your brain works, how you can be subtly influenced and what...

What is the meaning of life? It’s a question as old as our species, and today we’ll take a look at what purpose really means from a psychological perspective, as well as offer up a few tips on how to find yours.

Meditation methods and the scientific method are teaming up to explore some of the deepest questions about our existence and human nature.

Our bodies and homes are covered in microbes -- some good for us, some bad for us. As we learn more about the germs and microbes who share our living spaces, TED Fellow Jessica Green asks: Can we design buildings that encourage happy,...

At first glance, Pop Wunderkind Justin Bieber and revolutionary 19th Century pianist and composer Franz Liszt don't seem to have anything in common. And while they might not have any musical or biographical similarities, they both have...

* Viewer discretion advised. This video includes discussion of mature topics and may be inappropriate for some audiences. Currency -- the bills and coins you carry in your wallet and in your bank account -- is founded on marketing, on...

Tennis legend Billie Jean King isn't just a pioneer of women's tennis -- she's a pioneer for women getting paid. In this freewheeling conversation, she talks about identity, the role of sports in social justice and the famous Battle of...

Now that we’ve talked a little bit about how sociology works, it’s time to start exploring some of the ideas of the discipline’s founders. First up: Émile Durkheim. We’ll explain the concept of social facts and how Durkheim framed...

Can't wait to get into outer space? Well there's a bit you need to know first... Spending time in zero gravity can have some pretty extreme effects on the human body. Still scientists are already making plans for long trips to other...

If you had the power to forget, would you do it? Michael Aranda explains how this might be possible in this episode of SciShow.

Your brain is hard-wired to do all sorts of things when you are not consciously thinking about something. But just because it’s normal for your mind to wander doesn’t mean that it’s always good! Luckily, once you know how it works, you...

Within each of us are two selves, suggests David Brooks in this meditative short talk: the self who craves success, who builds a r_sum_, and the self who seeks connection, community, love -- the values that make for a great eulogy....

Government deficits have gotten a bad rap, says economist Stephanie Kelton. In this groundbreaking talk, she makes the case to stop looking at government spending as a path towards frightening piles of debt, but rather as a financial...

Robb Willer studies the forces that unite and divide us. As a social psychologist, he researches how moral values -- typically a source of division -- can also be used to bring people together. Willer shares compelling insights on how we...

An overview of what calculus is all about, with an emphasis on making it seem like something students could discover for themselves. The central example is that of rediscovering the formula for a circle's area, and how this is an...

In this video Paul Andersen shows conceptual thinking in a mini-lesson on systems as parts working together. TERMS System - a set of components (e.g. things) working together Part - a piece of an object or organism This progression is...

In this video Paul Andersen shows conceptual thinking in a mini-lesson on components and interactions within systems.

T
ERMS:
System - a set of components (e.g. things) workin
g together
Components - a part of
a larger...

Thanks to modern science and technology, we can predict what the weather will be like in 5 days, but it’s still a bit more challenging to predict what will happen to us and our societies.

Surgeon and author Sherwin Nuland discusses the development of electroshock therapy as a cure for severe, life-threatening depression -- including his own. It's a moving and heartfelt talk about relief, redemption and second chances.