You know that friend who seems quiet in groups but becomes a total chatterbox when you’re one-on-one? Or the person who’s always the life of the party but gets weirdly focused when they’re working ...

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.

While we all know individuals who are wildly outgoing, plenty of fun to be around and occasionally even obnoxious, chances are we relate less to these extroverts and more to introverts or people ...