It's Friday, December 19th, and you're listening to Inquiring Minds.

I'm Indra Viscontas.

Each week, we bring you a new in-depth exploration of the space where science, politics, and society collide.

We endeavor to find out what's true, what's left to discover, and why it all matters.

You can find us online at motherjones.com slash inquiring minds on Twitter at inquiring

show and on Facebook at slash inquiring minds podcast. And you can subscribe to the show on iTunes,

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