Lighting up the TED stage, Nobel laureate Al Gore takes stock of the current state of climate progress and calls attention to institutions that have failed to honor their promises by continuing to pour money into polluting sectors. He...

Most of the cases we call “electrocutions” are actually electric shocks: an electric current running through a body. Whether an electric shock becomes an electrocution depends on the nature of the current involved.

You might have felt the time passes more quickly as you get older, but why we feel like that?

Transportation is a big part of our world and engineers play a big role in making it happen. Today we’ll explore how transportation systems are designed and some things transportation engineers have to take into consideration, like...

A shooting star crashes onto Earth and a hideous blob emerges. It creeps and leaps, it glides and slides. It's also unstoppable: no matter what you throw at it, it just re-grows and continues its rampage. The only way to save the planet...

Even cells can be selfish.

At the heart of outbreaks are people! People are the ones who get sick, transmit diseases, and change the way they live in response to outbreaks. In outbreak science, we can better understand the relationship between people and disease...

People send 100 billion WhatsApp messages every day -- and they're all encrypted to protect them from potentially curious entities like companies, governments and even WhatsApp itself. With our increased reliance on digital communication...

Did you know that when you’re soaring on the swings, or sliding down the slide, you’re taking part in some seriously cool science? Jessi explains the forces you can find at the playground!

In this passionate call to action, 16-year-old climate activist Greta Thunberg explains why, in August 2018, she walked out of school and organized a strike to raise awareness of global warming, protesting outside the Swedish parliament...

Nearly 3,000 years ago, a Babylonian tablet described a curious illness called "miqtu" that caused symptoms ranging from facial twitching to full body convulsions. Today we know miqtu as seizures, and modern medicine has developed...

No one thinks twice about a woman wearing blue jeans in New York City -- but when Nobel laureate Malala wears them, it's a political act. Around the globe, individuality can be a crime, and clothing can be a form of protest. In a talk...

In 2007, Paul Rothemund gave TED a short summary of his specialty, DNA folding. Now he lays out in clear, abundant detail the immense promise of this field -- to create tiny machines that assemble themselves.

In which John Green teaches you about the Great Depression. So, everybody knows that the Great Depression started with the stock market crash in 1929, right? Not exactly. The Depression happened after the stock market crash, but...

Humans, octopi and pine trees alike are all made up of cells, tiny but sophisticated systems that keep life going. Cells are almost like tiny factories run by robots, with the nucleus, DNA, proteins, lipids, and vitamins and minerals all...

You've seen it on your shampoo bottle, vitamins, and even your fancy moisturizing cream. But what does the phrase "clinically proven' actually mean?

Infectious disease has affected the human species for as long as we’ve existed, but in that time we’ve come a long way in understanding what they are and how they spread. In this episode of Crash Course Outbreak Science, we’ll introduce...

What does Psychology mean? Where does it come from? Hank gives you a 10 minute intro to one of the more tricky sciences and talks about some of the big names in the development of the field. Welcome to Crash Course Psychology!!!

In this talk from TED University 2009, veteran rock climber Matthew Childs shares nine pointers for rock climbing. These handy tips bear on an effective life at sea level, too.

Our biases can be dangerous, even deadly — as we've seen in the cases of Michael Brown in Ferguson, Missouri, and Eric Garner, in Staten Island, New York. Diversity advocate Vernā Myers looks closely at some of the subconscious attitudes...

There are a few animals that will instinctively lick their wounds when injured. SciShow Quick Questions explores the reasons why they do this, and why we sometimes have to stop them from doing it.

Why, why, why does our education system look so similar to the way it did 50 years ago? Millions of students were failing then, as they are now -- and it’s because we’re clinging to a business model that clearly doesn’t work. Education...

New ReviewRat, Mole and Badger try to stop Toad from driving his new motorcar. Toad has other plans, escapes, steals a car and is locked away in prison.

New ReviewLet's be honest math anxiety is real. I had it, and many students have it if they are good at math or not. In this video I offer some tips to deal with with it