Brain scans may help people who were ill treated as children realize that they process fear differently than others. They may have a harder time realizing what's truly a threat and what's not. Researchers say that can lead to increased risk of anxiety and depression.
Huge stone slabs weighing up to 300 tons that now reside in Beijing's Forbidden City were slid more than 40 miles in 15th- and 16th-century China over water-lubricated ice roads in the dead of winter. Though spoked wheels had been around for almost 3,000 years, the ice roads were smoother and required less manpower.
There's a curious twist in the contentious debate over feeding antibiotics to animals in order to make them grow faster. There's evidence that using antibiotics for growth promotion, at least among pigs, doesn't even make economic sense. But some pork producers don't believe the evidence.
Rjukan lies in the shadow of surrounding mountains for nearly six months every year. But the town recently installed a system of mirrors to bring sunlight to its central square. Not everyone can bask in the glow at the same time, but the project is bringing residents together.
NASA has already scoped out most of the comets and asteroids large enough to do global damage. But the United Nations thinks an international consortium of space programs need to get together in an effort to stop smaller — but potentially still dangerous — asteroids from hitting Earth.
Retired astronaut Chris Hadfield, author of the new book An Astronaut's Guide to Life on Earth, has flown three space missions, including 144 days on the International Space Station. Hadfield talks about life in zero gravity, his one fear while in orbit, and how he went from test pilot to astronaut.
In Einstein and the Quantum: The Quest of the Valiant Swabian, theoretical physicist A. Douglas Stone writes that whereas Einstein is best known for his theory of relativity, his truly revolutionary idea was the development of quantum theory — an idea that escaped many of the age's most brilliant minds.
Digital cameras are ubiquitous today — even $20 cell phones have them built in. But few people actually know how a digital camera works. Shree Nayar, a computer scientist at Columbia University, set out to change that with his Bigshot Do-It-Yourself Digital Camera kit, which gives tinkerers a view of a camera's anatomy.
A year after Hurricane Sandy, recovery efforts are still ongoing, and questions remain about how to rebuild and prepare the coastlines for the next storm. A group of experts discusses rebuilding and protective options — from sea walls to "oyster-tecture" — and considers calls for a "managed retreat" from the shore.
Success has become synonymous with financial wealth, influence and status. But can we define success in another way — one that welcomes a broader range of accomplishment? It may not be as obvious as you think. In this hour, TED speakers share ideas for what makes us successful.
You're high, high up. You lean over and look way, way down. Then you leap. Meet my favorite leapers: An Austrian who falls for 24 continuous miles, a medieval musician who leaps off a tower, a movie stuntman who lands on a chain of cardboard boxes, and my favorite, a man who almost falls into the sky.