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The common thinking on biological sex goes like this: females have two X chromosomes in their cells, while males have one X and one Y. In this myth-busting talk, science writer and podcaster Molly Webster shows why the so-called "sex chromosomes" are more complicated than this simple definition -- and reveals why we should think about them diffe...

Engineering a website is equal parts vision and adaptation ... responding both to how users navigate the site and what new goals of the organization have emerged. Rochelle King, the senior designer at Spotify, was recently challenged to combine the many mismatched interfaces of Spotify into a single harmonious layout. She walks us through the pr...

The controversial website WikiLeaks collects and posts highly classified documents and video. Founder Julian Assange talks to TED's Chris Anderson about how WikiLeaks operates and what drives their mission. The interview includes graphic footage of a US airstrike in Baghdad.

When Jamie Heywood's brother was diagnosed with ALS, he devoted his life to fighting the disease as well. The Heywood brothers built an ingenious website where people share and track data on their illnesses -- and they discovered that the collective data had enormous power to comfort, explain and predict.

The founder of 4chan, a controversial, uncensored online imageboard, describes its subculture, some of the Internet "memes" it has launched, and the incident in which its users managed a very public, precision hack of a mainstream media website. The talk raises questions about the power -- and price -- of anonymity.

When two people join a dating website they are matched according to shared interests and how they answer a number of personal questions. But how do sites calculate the likelihood of a successful relationship? Christian Rudder one of the founders of popular dating site OKCupid details the algorithm behind 'hitting it off.' [Directed by Franz Palo...

As a guest host and features producer at WNYC's "Radiolab," Molly Webster has investigated everything from international surrogacy to metamorphosis.

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Andy Hobsbawm is the founder and CMO of Evrythng.com and the founder of the website Do The Green Thing.

Rufus Griscom and Alisa Volkman co-founded Babble, a website for parents. They have three sons.

Oscar Schwartz's research and writing concerns the influence of digital technology on culture and human interaction.

We're not sure anyone could be more excited than us for the launch of Onion Talks, the new weekly video series from The Onion. Forget imitation -- parody is the highest form of flattery. We feel honored to be worthy of satire from the masters of the craft. And we're just hoping that Area Man is the next to give a talk. With the launch of i...

Nate Garvis focuses on how we can use our civic institutions for the common good. Founder of Naked Civics, he believes we must create the culture for the world we want to live in.

Mustafa Akyol is a columnist for Turkey's oldest English-language daily, Hurriyet Daily News.

After an 18 month labor of love, we formally launched the new version of our website today.  Here are six things I'm proud of: 1. The team used every opportunity to engage you, our audience, in the new site's conception, testing and rollout. So your highest priorities were our highest priorities. Beta versions of the site have been used for s...

Online retailers resort to all kinds of strategies to separate you from your hard-earned money. Behavioral scientist Wendy De La Rosa names three tactics to look out for -- and shares how you can keep yourself from falling for them.

Inspired by Mister Rogers, Sara DeWitt strives to make every child feel special by charting the forefront of new digital mediums where kids spend their time.

Terry Moore is the director of the Radius Foundation, a forum for exploring and gaining insight from different worldviews.

Kevin Kelly packages ideas -- both other people's and his own.

Julian Assange serves as spokesperson for WikiLeaks.

Daniel Tammet is the author of "Born on a Blue Day," about his life with high-functioning autistic savant syndrome. He runs the language-learning site Optimnem, and his new book is "Embracing the Wide Sky: A Tour Across the Horizons of the Mind."

David Lindell develops next-generation algorithms and systems for imaging the world in 3D.

David Grady is on a crusade to help you take back your calendar.

Maya Penn makes eco-friendly clothes and accessories, which she sells on a site she built -- and gives away a percent of the profits.

Manuel Lima studies how information can be organized -- into elegant and beautiful diagrams that illustrate the many unexpected twists of big data.

With Architizer, an online hub for architecture, Marc Kushner is breaking architecture out of its insular echo chamber and reconnecting the public with buildings.

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 that the tiniest of tweaks can cause global outrage, but also so large that the ...

Sandra Fisher-Martins fights “information apartheid” -- the barrier created by overly complex language.

Jochen Wegner edits Zeit Online, the website of German weekly "Die Zeit," which prizes deep dives into cultural issues.