Why is health care so expensive? Once again, there are a lot of factors in play. Jacob and Adriene look at the many reasons that health care in the US is so expensive, and what exactly we get for all that money. Spoiler alert: countries...

Using wikis and digital fabrication tools, TED Fellow Marcin Jakubowski is open-sourcing the blueprints for 50 farm machines, allowing anyone to build their own tractor or harvester from scratch. And that's only the first step in a...

So you've made a movie. Congrats! But now you have to get people to see it. How you market your movie depends a lot on what your movie is. Is it a massive blockbuster? That means one set of requirements. Is it a small, Indy film? That's...

When it comes to fighting COVID-19, scientists are throwing every bit of science we’ve got at it. A creative technique some researchers are looking into involves using gene therapy to fight this virus with… another virus!

As climate change accelerates, finding clean alternatives to fossil fuels is more urgent than ever. Social entrepreneur Vaitea Cowan believes green hydrogen is the answer. Watch as she shares her team's work mass producing electrolyzers...

In this prescient 2005 talk, Clay Shirky shows how closed groups and companies will give way to looser networks where small contributors have big roles and fluid cooperation replaces rigid planning.

In this video Paul Andersen explains how a spontaneous process may take either the thermodynamically controlled or the kinetic controlled pathway. If the activation energy determines the path taken then the process is under kinetic...

Less than seven percent of people worldwide have a bachelor's degree -- and for many, this is simply because the cost of university is too high, says higher education executive Adrian K. Haugabrook. In this barrier-breaking talk, he...

Advertising adds value to a product by changing our perception, rather than the product itself. Rory Sutherland makes the daring assertion that a change in perceived value can be just as satisfying as what we consider “real” value -- and...

Everyone's talking about the "Internet of Things," but what exactly does that mean for our future? In this thoughtful talk, economist Marco Annunziata looks at how technology is transforming the industrial sector, creating machines that...

In this intimate talk filmed at TED's offices, energy innovator Amory Lovins shows how to get the US off oil and coal by 2050, $5 trillion cheaper, with no Act of Congress, led by business for profit. The key is integrating all four...

From shipping routes to airplane traffic to even the Internet, transportation planning is all about designing optimal transportation networks to move goods, information, and people around the globe. Today, we're going to discuss...

Drugs alone can't stop disease in sub-Saharan Africa: We need diagnostic tools to match. TED Senior Fellow Frederick Balagadde shows how we can multiply the power and availability of an unwieldy, expensive diagnostic lab -- by...

What if we could build a global waste disposal service for carbon? In this forward-thinking talk, carbon capture advisor Bas Sudmeijer proposes building CO2 networks: partnerships between cities around the world that would share the cost...

In this video Paul Andersen shows conceptual thinking in a mini-lesson on cause, mechanism and effect.

T
ERMS:
Cause - a thing that gives rise t
o an event
Ef
fect - an event
Mechanism - the process und
erlying a...

The world's most entertaining and useless self-help guide, from the brilliant mind behind the wildly popular webcomic xkcd and the #1 New York Times bestsellers What If? and Thing Explainer



For...

An essential part of engineering is engineering design. Today we’ll see how design synthesis helps you put together the components of a process and decide what techniques are needed to solve your problem. We’ll explain the need test...

Sending rockets into space requires sacrificing expensive equipment, burning massive amounts of fuel, and risking potential catastrophe. So in the space race of the 21st century, some engineers are abandoning rockets for something more...

Why do we love people we're related to? Compared to strangers, why do we feel such a deep sense of connection with our family members? Sure, they're nice to us, we take care of each other, and we often live with them, but there has to be...

Our energy future depends on nuclear fusion, says Michel Laberge. The plasma physicist runs a small company with a big idea for a new type of nuclear reactor that could produce clean, cheap energy. His secret recipe? High speeds,...

Some of the biggest evolution questions finally answered.

Modern American health care is defined by its high costs, high overhead and inaccessibility -- especially for low-income patients. What if we could redesign the system to serve the poor and still have doctors make money? In an...

In this moving yet pragmatic talk, Kevin Bales explains the business of modern slavery, a multibillion-dollar economy that underpins some of the worst industries on earth. He shares stats and personal stories from his on-the-ground...

Nobody likes going to the hospital, whether it's because of the logistical challenges of getting there, the astronomical costs of procedures or the alarming risks of complications like antibiotic-resistant bacteria. But what if we could...