Diamonds: according to the ads, they're a girl's best friend, and the only thing worth picking for an engagement ring. But how did diamonds become so important -- and why?
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V32: The Mysterious New Persian Spy Radio
58:40

Listener Mail: Worship vs. Belief, Guardrails and Flock, The U.S.S. Liberty Cover-up, and More
1:06:16

How Leaving the US Works
56:53