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578. Water, Water Everywhere — But You Have to Stop and Think

What surprises lurk in our sewage? How did racist city planners end up saving Black lives? Why does Arizona grow hay for cows in Saudi Arabia? Three strange stories about the most fundamental substance we all take for granted.

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  Extra: Why Is 23andMe Going Under? (Update)

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  585. A Social Activist in Prime Minister’s Clothing

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  584. How to Pave the Road to Hell

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  Extra: The Men Who Started a Thinking Revolution (Update)

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  Why Are There So Many Bad Bosses? (Update)

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  583. Are We Living Through the Most Revolutionary Period in History?

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  Extra: How Much Do You Know About Immigration?

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  582. Why Is Everyone Moving to Canada?

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  581. What Both Parties Get Wrong About Immigration

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  Extra: Madeleine Albright’s Warning on Immigration

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  580. The True Story of America’s Supremely Messed-Up Immigration System

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  579. Are You Caught in a Social Media Trap?

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  Extra: What Is Sportswashing — and Does It Work? (Update)

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  Is Google Getting Worse? (Update)

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  Extra: Mr. Feynman Takes a Trip — But Doesn’t Fall