A personal story, a collective triumph: Dyan deNapoli tells the story of the world’s largest volunteer animal rescue, which saved more than 40,000 penguins after an oil spill off the coast of South Africa. How does a job this big get done? Penguin by penguin by penguin … (Recorded at TEDxBoston, June 2011, in Boston, Massachusetts. Duration: 11:44.)

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