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Melissa Marshall brings a message to all scientists (from non-scientists): We're fascinated by what you're doing. So tell us about it -- in a way we can understand. In just 4 minutes, she shares powerful tips on presenting complex scientific ideas to a general audience.

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Nancy Duarte: The secret structure of great talks

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From the "I have a dream" speech to Steve Jobs' iPhone launch, many great talks have a common structure that helps their message resonate with listeners. In this talk, presentation expert Nancy Duarte shares practical lessons on how to make a powerful call-to-action.

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John Bohannon: Dance vs. powerpoint, a modest proposal

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Instead of a boring slide deck at your next presentation, how about bringing in a troupe of dancers? That's science writer John Bohannon's "modest proposal" in this spellbinding choreographed talk. He makes his case by example, in collaboration with dancers from Black Label Movement.

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Your body language may shape who you are

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(NOTE: Some of the findings presented in this talk have been referenced in an ongoing debate among social scientists about robustness and reproducibility. Read “Corrections & Updates” below for more details as well as Amy Cuddy’s response.) Body language affects how others see us, but it may also change how we see ourselves. Social psychologist Amy Cuddy argues that “power posing” -- standing in a posture of confidence, even when we don’t feel confident -- can boost feelings of confidence, and might have an impact on our chances for success.

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Morgan Spurlock: The greatest TED Talk ever sold

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With humor and persistence, filmmaker Morgan Spurlock dives into the hidden but influential world of brand marketing, on his quest to make a completely sponsored film about sponsorship. (And yes, onstage naming rights for this talk were sponsored too. By whom and for how much? He'll tell you.)

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Itay Talgam: Lead like the great conductors

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An orchestra conductor faces the ultimate leadership challenge: creating perfect harmony without saying a word. In this charming talk, Itay Talgam demonstrates the unique styles of six great 20th-century conductors, illustrating crucial lessons for all leaders.

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In a lively show, mathemagician Arthur Benjamin races a team of calculators to figure out 3-digit squares, solves another massive mental equation and guesses a few birthdays. How does he do it? He’ll tell you.

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Clifford Stoll captivates his audience with a wildly energetic sprinkling of anecdotes, observations, asides -- and even a science experiment. After all, by his own definition, he's a scientist: "Once I do something, I want to do something else."

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Tony Robbins discusses the "invisible forces" that motivate everyone's actions -- and high-fives Al Gore in the front row.

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Steven Pinker: What our language habits reveal

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In an exclusive preview of his book The Stuff of Thought , Steven Pinker looks at language and how it expresses what goes on in our minds -- and how the words we choose communicate much more than we realize.