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The "dismal science" truly shines in this optimistic talk, as economist Alex Tabarrok argues free trade and globalization are shaping our once-divided world into a community of idea-sharing more healthy, happy and prosperous than anyone's predictions.

With the hit economic blog MarginalRevolution.com, co-author Alex Tabarrok generates more hits than a summer hailstorm, and sheds light into the darkest corners of the dismal science.