Why are pencils shaped like hexagons, and how did they get their iconic yellow color? Pencil shop owner Caroline Weaver takes us inside the fascinating history of the pencil....

Does texting mean the death of good writing skills? John McWhorter posits that there’s much more to texting -- linguistically, culturally -- than it seems, and it’s all good news....

When trying to come up with a new idea, we all have times when we get stuck. But according to research by behavioral and learning scientist Marily Oppezzo, getting up and going for a walk might be all it takes to get your creative juices flowing. In this fun, fast...

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...

Thousands of years in the making, the Olympics began as part of a religious festival honoring the Greek god Zeus in the rural Greek town of Olympia. But how did it become the greatest show of sporting excellence on earth? Educator Armand D'Angour explains the...

Author A.J. Jacobs embarked on a quest with a deceptively simple idea at its heart: to personally thank every person who helped make his morning cup of coffee. More than one thousand "thank yous" later, Jacobs reflects on the globe-trotting journey that ensued -- and...

For a genuine conversation, consider talking to a robot; the less humanized, the better. Consumer researcher Anne Scherer shares her findings on why some machines get us to open up better than actual people, revealing fascinating insights about human nature that could...

Could someone hack your pacemaker? Avi Rubin shows how hackers are compromising cars, smartphones and medical devices, and warns us about the dangers of an increasingly hack-able world....

Facebook's "like" and "share" buttons are seen 22 billion times a day, making them some of the most-viewed design elements ever created. Margaret Gould Stewart, Facebook's director of product design, outlines three rules for design at such a massive scale—one so big...

To work safely, self-driving cars must avoid obstacles -- including those just out of sight. And for this to happen, we need technology that sees better than humans can, says electrical engineer David Lindell. Buckle up for a quick, groundbreaking tech demo as Lindell...