As the president of Bennington College, Liz Coleman challenged the status quo of a higher education system more concerned with growing endowments than with training the next generation of public servants. Now heading the Center for the Advancement of Public Action, she’s focused on a more fundamental issue: what will schools teach? And what does that mean for the future of our society?

Salman Khan’s Khan Academy ignited the conversation around online education. Hear his vision for the future.

17-year-old entrepreneur, Avani Singh, empowers women in New Delhi, India, to earn a living and gain financial freedom.

Watch how drones have been presented on the TED stage in various ways over 15 years.

Is sharing the solution to our global challenges? Robin Chase says yes. Read about the founder of Zipcar’s vision for future collaborative economies.

Photographer Edward Burtynsky travels the world to capture how man is leaving a mark on nature. See 13 of his haunting photos.