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Episode 6

Genes

“What breed is she?” Every owner of a mixed-breed dog is eventually asked this when out on a walk. But how much do dogs’ breeds — and genes — really tell us about who they are? Alexandra Horowitz asks Soledad O’Brien about her dog Coco’s ancestry (and her own), then talks to a pioneer in the field of canine DNA.

Episode 103

Should Toilets Be Free?

Why do Americans tip so much? What happened when Angie eliminated grading in a college course? And why did almost every pay toilet in the U.S.A. vanish between 1970 and 1980?

Episode 79

Solar Geoengineering Would Be Radical. It Might Also Be Necessary.

David Keith has spent his career studying ways to reflect sunlight away from the earth. It could reduce the risks of climate change — but it won’t save us.

Episode 40

Is Rainy Day Joint Pain All in Your Head?

You’ve heard that the weather can make your joints hurt. Maybe you’ve even felt it yourself. But, is it true? Bapu Jena looks at why we think we know certain things in medicine, even when the data don’t agree.

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