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The Science, Business & Health Effects Of Fish Oil Supplements

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Author Paul Greenberg says the harvesting of tiny fish for omega-3 supplements is having a ripple effect, leading to less healthy and bountiful oceans. His new book is 'The Omega Principle.' Also, critic David Edelstein reviews the documentary 'Three Identical Strangers' about triplets separated at birth and then reunited when they were in college.

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