Simon Sinek has a simple but powerful model for inspirational leadership -- starting with a golden circle and the question "Why?" His examples include Apple, Martin Luther King, and the Wright brothers ...

What makes a great leader? Management theorist Simon Sinek suggests, it’s someone who makes their employees feel secure, who draws staffers into a circle of trust. But creating trust and safety — especially in an uneven economy — means taking on big responsibility.

Simon Sinek explores how leaders can inspire cooperation, trust and change. He's the author of the classic "Start With Why"; his latest book is "Leaders Eat Last."

Stressed about an upcoming presentation? These talks are full of helpful tips on how to get up in front of an audience and make a lasting impression.

TEDx events unleash fresh ideas from local communities. Close to 50,000 talks have been given at 10,000 events since the program launched in 2009. Below, the 10 most-watched TEDx talks posted to our homepage.

If you’ve got a presentation to give at work or school — or are perhaps getting ready to speak at a TEDx event? — we recommend these talks to help get you pumped up.

Human resources is a huge part of what makes businesses work. Strengthen and motivate your team with these accessible talks focused on creating a rich, spirited company culture.

Want to help bring out the best in people? Let these talks support you in guiding others to succeed.

You know how to write a resume and ask for a promotion. These talks go beyond the basics, offering insightful advice on how to think about our work lives.

How to be happier at work? Start by focusing on happiness -- not, surprisingly, on work. We learned this fun fact from Shawn Achor's TED Talk. So we asked Achor to choose some more talks he loves, about making work and life a happier place.

What makes a great leader? These TED Talks offer surprising, nuanced approaches on how to inspire and empower others to do their very best.

From overcoming adversity to the latest in tech—these are the talks you binge-watched this year.