It's no secret that inequality is rising in countries around the world, but what does this mean for the future? What is the middle class, exactly -- and why do some people believe it's going extinct? Find out in this classic episode.
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The Legacy Program, Chapter Two: How Aliens (Could) Work
58:31

CLASSIC: Plastics, Microplastics and Conspiracy
51:37

The Legacy Program, Chapter One: Fact and Fiction
1:20:34