David Lang is a maker who taught himself to become an amateur oceanographer -- or, he taught a robot to be one for him. In a charming talk Lang, a TED Fellow, shows how he and a network of ocean lovers teamed up to build open-sourced, low-cost underwater explorers.

You don't have to be a scientist to help protect the world's oceans, says underwater drone expert and TED Fellow David Lang -- in fact, ordinary citizens have pulled together to save the planet's natural treasures many times in history. Lang asks us to take a lesson from the story of the US National Parks Service, offering a three-point plan for...

In the theater, conflict is good, it makes for compelling drama. But in real life, conflict is generally something harmful. Fightmaster and certified conflict resolution trainer David S. Leong explains that the same tools that make for a successful stage or screen fight can be used to minimize conflicts in real life. It all comes down to underst...