James Glattfelder studies complexity: how an interconnected system -- say, a swarm of birds -- is more than the sum of its parts. And complexity theory, it turns out, can reveal a lot about how the world economy works. Glattfelder shares a groundbreaking study of how...

Before he fought in the galactic battles of Star Wars, Adam Driver was a United States Marine with 1/1 Weapons Company. He tells the story of how and why he became a Marine, the complex transition from soldier to civilian -- and Arts in the Armed Forces, his nonprofit...

In this glimpse into our technological future, cryptographer Craig Costello discusses the world-altering potential of quantum computers, which could shatter the limits set by today's machines -- and give code breakers a master key to the digital world. See how...

Linus Torvalds transformed technology twice -- first with the Linux kernel, which helps power the Internet, and again with Git, the source code management system used by developers worldwide. In a rare interview with TED Curator Chris Anderson, Torvalds discusses with...

Nations can now attack other nations with cyber weapons: silent strikes on another country's computer systems, power grids, dams that leave no trace behind. (Think of the Stuxnet worm.) Guy-Philippe Goldstein shows how cyberattacks can leap between the digital and...

We check our phones upwards of 50 times per day -- but when our kids play around with them, we get nervous. Are screens ruining childhood? Not according to children's media expert Sara DeWitt. In a talk that may make you feel a bit less guilty about handing a tablet...

Social entrepreneur Julie Cordua works on a problem that isn't easy to talk about: the sexual abuse of children in images and videos on the internet. At Thorn, she's building technology to connect the dots between the tech industry, law enforcement and government --...

There are 168 hours in each week. How do we find time for what matters most? Time management expert Laura Vanderkam studies how busy people spend their lives, and she's discovered that many of us drastically overestimate our commitments each week, while...

On the web, a new "Friend" may be just a click away, but true connection is harder to find and express. Ze Frank presents a medley of zany Internet toys that require deep participation -- and reward it with something more nourishing. You're invited, if you promise...

"Secrets can take many forms -- they can be shocking, or silly, or soulful." Frank Warren, the founder of PostSecret.com, shares some of the half-million secrets that strangers have mailed him on postcards....

Doesn't it seem like a lot of online news sites have moved beyond reporting the news to openly inciting your outrage (and your page views)? News analyst Sally Kohn suggests — don't engage with news that looks like it just wants to make you mad. Instead, give your...

The feeling of security and the reality of security don't always match, says computer-security expert Bruce Schneier. In his talk, he explains why we spend billions addressing news story risks, like the "security theater" now playing at your local airport, while...