Author Susan Cain, a self-described introvert, accepted an invitation to do what she feared — give a TED talk. Although she was anxious on the big day, she got through it and wowed the audience.

All the bold ideas, inventions and perspectives of the beloved TED Talks conference and video series, plus special follow-up interviews with the people behind them.

We're entering a new era of brain monitoring and enhancement, but what are the ethical implications? This hour, TED speakers explore the potential and pitfalls of merging our minds with machines.

Bill Gates said 90% of the views on his 2015 TED talk, in which he predicted a virus could kill millions, came "after it was too late." From the civil rights movement to the Vietnam War protests and ...