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The U.S. has fallen into polarized, partisan, political bickering. Online, liberals and conservatives seem to despise each other. But nobody seems to stop to ask: How did we get our liberal and conservative views in the first place? We formed our opinions by carefully weighing the issues and thoughtfully choosing a stance, right? Well, no; turns out over half of our political leanings are determined, incredibly, by our genes. In this episode: How we figured that out, and what it means for our future.

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