What is the future of our oceans?

Gulf oil spill
Oil surrounds the site of the Deepwater Horizon oil spill in the Gulf of Mexico near the coast of Louisiana.
AP Photo/Jae C. Hong

Oceanographers and deep-sea explorers Sylvia Earle and Edith Widder travel around the world to study what's happening to our oceans. In a conversation at the 2010 Aspen Ideas Festival, they discuss the BP oil spill and other threats to our oceans -- as well as what ocean management should look like in the future.