In memory of a great man and the numbers he loved.

Data visionary Hans Rosling's favorite talks keep an eye toward health, economics and population growth -- from business in Africa to youth culture in China.

NASA engineer Bobak Ferdowsi helped the Curiosity rover land on Mars -- and he's curated these talks that deepen our understanding of the world around us.

A collection of talks that highlight the powerful impact of sharing history visually.

Behold, the first five TED Talks posted online, shared with the world on June 27, 2006. Each one is powerful and moving -- and still resonates today.

Tim O'Reilly of O'Reilly Media ("Make:" magazine, anyone?) shares his favorite TED Talks with notes about why each one had an impact. Surprise: It's not all tech.

A few things you've always wanted to know about sex: why we enjoy it, how to explain it, and, importantly, how flowers do it.

Browse Ben Affleck's super 8, and his director's notes on why he picked them.

These powerful talks offer ideas for rethinking—and hopefully stopping—the spread of HIV and AIDS.

We asked Peter Gabriel what TEDTalks he thinks will still be making waves in 25 years, like his classic 1986 album, "So." Here are his picks, from printing a human kidney to the learning revolution.

Steve Case says, "It has been amazing to watch TED's transition from party to platform, and from a small gathering for the benefit of a few to a massive global movement. Choosing my favorite TED Talks after so many years was no easy task, but here goes ... "

When we asked Bill Gates to curate a list of his favorite talks, his first response was, “There are too many to pick, really.” Here, he's whittled it down to 13 essentials.

What is TED? This primer of 11 classic TED Talks show you the wide range of topics covered -- and introduce you to beloved speakers like Amy Cuddy, Brené Brown, Sir Ken Robinson and Chimamanda Adichie. Find your next favorite talk ...

12 counterintuitive talks to flip your thinking on everything from shoes to aid organizations to the universe.

It's the age of Big Data. But what, exactly, do we do with all this information? These talks explore practical, ethical -- and spectacularly visual -- ways to understand near-infinite data.

Strengthen your skills with these informative talks on how to get the most out of your research.

Want a different perspective of the world? Get a better, more friendly grasp of statistics -- one of the most understood and misused tools in modern society.

Our most viewed TED Talks translated into Hindi by volunteer TED Translators. (Turn on subtitles to access translations.)

From string theory to geopolitics, neuroscience to tissue engineering, watch these talks that make complex topics more understandable.

A list of the talks mentioned in TED Talks: The Official TED Guide to Public Speaking. Chris Anderson's comments on each talk (in the grey italics) indicate why they were included in the book. Use the book index for more info.

Ever dreamed of starting your own business? These talks can help get your idea off the ground.