Paul Greenberg: The four fish we're overeating -- and what to eat instead | TED Talk | TED.com

As people try to cut down on meat consumption, the option to eat fish seems great, but we only eat the same few, which is destroying the ocean. This video explains how to do it better. "The way we fish for popular seafood such as salmon, tuna and shrimp is threatening to ruin our oceans. Paul Greenberg explores the sheer size and irrationality of the seafood economy, and suggests a few specific ways we can change it, to benefit both the natural world and the people who depend on fishing for their livelihoods."