Finding Exxon Valdez oil in Alaska 21 years on

Before the BP accident in the Gulf of Mexico, America's worst offshore oil leak was the 1989 Exxon Valdez spill in Alaska.

Twenty-one years later, the BBC's Rajesh Mirchandani visited the fishing town of Cordova to see how it was recovering.

While there local boat captain and environmental activist Dave Janka took him to see how oil from the Valdez could still be found.