Is there life beyond earth? Join NASA's director of planetary science James Green for a survey of the places in our solar system that are most likely to harbor alien life.

* Viewer discretion advised. This video includes discussion of mature topics and may be inappropriate for some audiences. In halls of justice around the world, how can we ensure everyone is treated with dignity and respect? A pioneering...

Anab Jain brings the future to life, creating experiences where people can touch, see and feel the potential of the world we're creating. Do we want a world where intelligent machines patrol our streets, for instance, or where our...

At the heart of the Milky Way, there's a supermassive black hole that feeds off a spinning disk of hot gas, sucking up anything that ventures too close -- even light. We can't see it, but its event horizon casts a shadow, and an image of...

Living in a city means accepting a certain level of dysfunction: long commutes, noisy streets, underutilized spaces. Carlos Moreno wants to change that. He makes the case for the "15-minute city," where inhabitants have access to all the...

The gastric brooding frog lays its eggs just like any other frog -- then swallows them whole to incubate. That is, it did until it went extinct 30 years ago. Paleontologist Michael Archer makes a case to bring back the gastric brooding...

The most important infrastructure we have is educated minds, says former Tunisian government minister Amel Karboul. Yet too often large investments go to more visible initiatives such as bridges and roads, when it's the minds of our...

In graphic design, Marian Bantjes says, throwing your individuality into a project is heresy. She explains how she built her career doing just that, bringing her signature delicate illustrations to storefronts, valentines and even...

Matt Mills and Tamara Roukaerts demonstrate Aurasma, a new augmented reality tool that can seamlessly animate the world as seen through a smartphone. Going beyond previous augmented reality, their "auras" can do everything from making a...

With streams and rivers drying up because of over-usage, Rob Harmon talks about a clever market mechanism to bring back the water. Farmers and beer companies find their fates intertwined in the century-old tale of Prickly Pear Creek.

In a single year, there are 200-300 million cases of malaria and 50-100 million cases of dengue fever worldwide. So: Why haven't we found a way to effectively kill mosquitos yet? Hadyn Parry presents a fascinating solution: genetically...

Scared of superintelligent AI? You should be, says neuroscientist and philosopher Sam Harris -- and not just in some theoretical way. We're going to build superhuman machines, says Harris, but we haven't yet grappled with the problems...

On sunny days, citizens of ancient Rome could be found exchanging news and gossip while attending to more urgent business at the public latrines. Today, most cultures consider trips to the restroom to be a more private occasion. But even...

Expensive to build and often needing highly skilled engineers to maintain, artificial intelligence systems generally only pay off for large tech companies with vast amounts of data. But what if your local pizza shop could use AI to...

Today's AI algorithms require tens of thousands of expensive medical images to detect a patient's disease. What if we could drastically reduce the amount of data needed to train an AI, making diagnoses low-cost and more effective? TED...

Around the world, hundreds of thousands of lost ancient sites lie buried and hidden from view. Satellite archaeologist Sarah Parcak is determined to find them before looters do. With the 2016 TED Prize, Parcak is building an online...

How do you build a wheelchair ready to blaze through mud and sand, all for under $200? MIT engineer Amos Winter guides us through the mechanics of an all-terrain wheelchair that's cheap and easy to build -- for true accessibility -- and...

The earth is a big place to keep clean. With Litterati -- an app for users to identify, collect and geotag the world's litter -- TED Resident Jeff Kirschner has created a community that's crowdsource-cleaning the planet. After tracking...

Our poop and pee have superpowers, but for the most part we don't harness them. Molly Winter faces down our squeamishness and asks us to see what goes down the toilet as a resource, one that can help fight climate change, spur innovation...

In a complex and changing world, how can we make sure unconventional people and their ideas thrive? Business executive Ipsita Dasgupta introduces the concept of "co-conspirators" -- people willing to bend or break the rules to challenge...

Meet AIVA, an artificial intelligence that has been trained in the art of music composition by reading more than 30,000 of history's greatest scores. In a mesmerizing talk and demo, Pierre Barreau plays compositions created by AIVA and...

* Viewer discretion advised. This video includes discussion of mature topics and may be inappropriate for some audiences. TED's Chris Anderson says the rise of web video is driving a worldwide phenomenon he calls Crowd Accelerated...

Machines that can think, learn and adapt are coming -- and that could mean that we humans will end up with significant unemployment. What should we do about it? In a straightforward talk about a controversial idea, futurist Martin Ford...

In the developing world, access to incubators is limited by cost and distance, and millions of premature babies die each year. TED Fellow Jane Chen shows an invention that could keep millions of these infants warm -- a design that's...