Joan Blades and John Gable want you to make friends with people who vote differently than you do. A pair of political opposites, the two longtime pals know the value of engaging in honest conversations with people you don't immediately...

Sarah Jones changes personas with the simplest of wardrobe swaps. In a laugh-out-loud improvisation, she invites 11 "friends" from the future on stage—from a fast-talking Latina to an outspoken police officer—to ask them questions...

In 1972, psychologists at the University of Colorado surveyed 140 couples to determine whether a relationship facing parental disapproval was more likely to strengthen or crumble under the pressure. Can long-term success of a romantic...

Jessi has a special guest today who is an expert on the night sky! Join Jessi and Sam the Bat to learn all about constellations, and to test your star knowledge by making flash cards!

As a young scientist, Catherine Mohr was on her dream scuba trip -- when she put her hand right down on a spiny sea urchin. While a school of sharks circled above. What happened next? More than you can possibly imagine. Settle in for...

In a world of too many options and too little time, our obvious choice is to just ignore the ordinary stuff. Marketing guru Seth Godin spells out why, when it comes to getting our attention, bad or bizarre ideas are more successful than...

Legendary duo Jane Fonda and Lily Tomlin have been friends for decades. In a raw, tender and wide-ranging conversation hosted by Pat Mitchell, the three discuss longevity, feminism, the differences between male and female friendship,...

A decade ago, Robin Chase founded Zipcar in the US, now the largest car-sharing company in the world. Now she's exploring the next level of car-sharing: Buzzcar, a French startup that lets people rent their own cars to others. The...

Today we know that humans and chimpanzees share 99% of their DNA and that we have a lot in common. Not just how we look, but how we behave, form groups, defend our turf, and love each other. People didn't always see other...

After a horrific accident put her in the tabloid headlines, Kate Stone found a way to take control of her narrative -- and help prevent others from losing their privacy, too. Learn how she reclaimed her story in this personal talk...

In the year leading up to this talk, the web tool Twitter exploded in size (up 10x during 2008 alone). Co-founder Evan Williams reveals that many of the ideas driving that growth came from unexpected uses invented by the users themselves.

The place that travel writer Pico Iyer would most like to go? Nowhere. In a counterintuitive and lyrical meditation, Iyer takes a look at the incredible insight that comes with taking time for stillness. In our world of constant movement...

Today, we're moving on from game consoles to talk about a bigger shift that was happening in the gaming industry. In the mid 2000s, we saw a proliferation of Internet accessible devices and with them gaming would expand to a new...

Photographer Boniface Mwangi wanted to protest against corruption in his home country of Kenya. So he made a plan: He and some friends would stand up and heckle during a public mass meeting. But when the moment came ... he stood alone....

Jessi and Squeaks look into an animal mystery: Why do zebras have stripes?

This chair is my legs -- this chair is my life, says accessibility champion Jane Velkovski, who uses a wheelchair after being diagnosed with Spinal Muscular Atrophy (SMA). With clarity and poise, he shares how his first motorized...

What's it like to grow up within a group of people who exult in demonizing ... everyone else? Megan Phelps-Roper shares details of life inside America's most controversial church and describes how conversations on Twitter were key to her...

Legendary skeptic James Randi takes a fatal dose of homeopathic sleeping pills onstage, kicking off a searing 18-minute indictment of irrational beliefs. He throws out a challenge to the world's psychics: Prove what you do is real, and...

Civilians don't miss war. But soldiers often do. Journalist Sebastian Junger shares his experience embedded with American soldiers at Restrepo, an outpost in Afghanistan's Korengal Valley that saw heavy combat. Giving a look at the...

Photojournalist Barat Ali Batoor was living in Afghanistan -- until his risky work forced him to leave the country. But for Batoor, a member of a displaced ethnic group called the Hazara, moving home to Pakistan proved dangerous too. And...

Hugh evans started a movement that mobilizes "global citizens," people who self-identify first and foremost not as members of a state, nation or tribe but as members of the human race. In this uplifting and personal talk, learn more...

One of the internet's favorite pastimes is arguing, but very few of those arguments ever actually go anywhere. It can be frustrating to watch, but scientists have some ideas on why things play out the way they do.

* Viewer discretion advised. This video includes discussion of mature topics and may be inappropriate for some audiences. What really causes addiction -- to everything from cocaine to smart-phones? And how can we overcome it? Johann Hari...

Angelica Dass's photography challenges how we think about skin color and ethnic identity. In this personal talk, hear about the inspiration behind her portrait project, Human_, and her pursuit to document humanity's true colors rather...