Marine biologist Sylvia Earle on why the ocean matters

Marine biologist Sylvia Earle has spent more than four decades at the forefront of ocean exploration -- and at age 83, she shows no signs of slowing down. Earle was the first female chief scientist of the U.S. National Oceanic and Atmospheric Administration and was named Time magazine’s 1998 "Hero of the Planet.” Earle offers her brief but spectacular take on passion for the ocean and the planet.