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All Things Considered

Iowa Republican congressional candidate Zach Nunn speaks at an October campaign event outside Des Moines. Danielle Kurtzleben/NPR hide caption

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Danielle Kurtzleben/NPR

Politics

Voters everywhere are talking about the same issues. Here's why that matters

In Iowa's competitive 3rd Congressional District, candidates and voters are talking about the same issues as those everywhere else. That's part of a long-growing pattern.

A doctor points to PET scan results that are part of Alzheimer's disease research. Much work in the field focuses a substance called beta-amyloid. A new study could test whether that's the right target. Evan Vucci/AP hide caption

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Evan Vucci/AP

What causes Alzheimer's? Study puts leading theory to 'ultimate test'

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A river gauge marks near record low water levels on the Mississippi River at New Orleans. It's many feet lower than it typically would be and it's creating all sorts of problems. L. Kasimu Harris for NPR hide caption

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L. Kasimu Harris for NPR

Saltwater is moving up the Mississippi River. Here's what's being done to stop it

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Iowa Republican congressional candidate Zach Nunn speaks at an October campaign event outside Des Moines. Danielle Kurtzleben/NPR hide caption

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Danielle Kurtzleben/NPR

Voters everywhere are talking about the same issues. Here's why that matters

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The Anopheles stephensi mosquito, seen here sitting on a window, is year-round pest that has invaded urban areas in parts of Africa, and has recently been the cause of dramatic outbreaks of malaria in Ethiopia. Soumyabrata Roy/NurPhoto via Getty Images hide caption

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Soumyabrata Roy/NurPhoto via Getty Images

This urban mosquito threatens to derail the fight against malaria in Africa

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