Why I built my own time machine | Lucas Rizzotto

What happens to the clothes we don't buy? You might think that last season's coats, trousers and turtlenecks end up being put to use, but most of it (nearly 13 million tons each year in the United Sta...

15 Feb 20189min

"To be African is to be inspired by culture and to be filled with undying hope for the future," says designer and TED Fellow Walé Oyéjidé. With his label Ikiré Jones (you'll see their work in Marvel's...

15 Feb 20184min

The hymen is still the most misunderstood part of the female body. Nina Dølvik Brochmann and Ellen Støkken Dahl share their mission to empower young people through better sex education, debunking the ...

13 Feb 201811min

Bhu Srinivasan researches the intersection of capitalism and technological progress. Instead of thinking about capitalism as a firm, unchanging ideology, he suggests that we should think of it as an o...

12 Feb 20186min

The democratic process is messy, complicated and often inefficient -- but across Africa, activists are redefining democracy by putting protest at its center. In an illuminating talk, political scienti...

8 Feb 201810min

Mohamad Jebara loves mathematics -- but he's concerned that too many students grow up thinking that this beautiful, rewarding subject is difficult and boring. His company is experimenting with a bold ...

8 Feb 201813min

If architect and writer John Cary has his way, women will never need to stand in pointlessly long bathroom lines again. Lines like these are representative of a more serious issue, Cary says: the lack...

7 Feb 201813min

Su Kahumbu raises badass cows -- healthy, well-fed animals whose protein is key to solving a growing crisis in Africa: childhood nutritional stunting. With iCow, a simple SMS service she developed to ...

6 Feb 20187min