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Experimental drugs that clear clumps of proteins from the brains of Alzheimer's patients haven't panned out yet. Science Photo Library/Pasieka/Getty Images hide caption

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Science Photo Library/Pasieka/Getty Images

Test Of Experimental Alzheimer's Drug Finds Progress Against Brain Plaques

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What did she say? Eniko Kubinyi/Science hide caption

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Eniko Kubinyi/Science

Their Masters' Voices: Dogs Understand Tone And Meaning Of Words

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What effect does background music have on shark documentaries? Dave Fleetham/Getty Images/Perspectives hide caption

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Dave Fleetham/Getty Images/Perspectives

Researchers Test The Effects Of Background Music On People

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Baby Simulator Doesn't Deter Teenage Pregnancies, Study Indicates

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Bacteriophages, in red, look like tiny aliens, with big heads and skinny bodies. They use their "legs" to stick to and infect a bacterial cell, in blue. Biophoto Associates/Science Source hide caption

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Biophoto Associates/Science Source

Your Gut's Gone Viral, And That Might Be Good For Your Health

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Careful audits of a representative sampling of bills from 37 Medicare Advantage Programs in 2007 have revealed some consistent patterns in the way they overbill, a Center for Public Integrity investigation finds. Nick Shepherd/Ikon Images/Getty Images hide caption

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Nick Shepherd/Ikon Images/Getty Images

Researchers are recruiting volunteers to participate in a four-year study trial of cocoa extract. Half of the participants will take capsules containing about as much cocoa extract as you'd get from eating about 1,000 calories of dark chocolate. Dennis Gottlieb/Getty Images hide caption

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Dennis Gottlieb/Getty Images

A Chocolate Pill? Scientists To Test Whether Cocoa Extract Boosts Health

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Ramen will buy anything from smuggled fruit to laundry services from fellow inmates, a study at one prison finds. It's not just that ramen is tasty: Prisoners say they're not getting enough food. DigiPub/Getty Images hide caption

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DigiPub/Getty Images

Lenroy Watt talks with residents of Miami's Little Haiti about Zika, leaving brochures in Creole about how to prevent the illness, as well as phone numbers for local mosquito control agencies and the county health department. Courtesy of Planned Parenthood hide caption

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Courtesy of Planned Parenthood

Planned Parenthood Joins Campaign To Rid Miami Neighborhoods Of Zika

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These are insect cells infected with the Guaico Culex virus. The different colors denote cells infected with different pieces of the virus. Only the brown-colored cells are infectious, because they contain the complete virus. Michael Lindquist/Cell Press hide caption

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Michael Lindquist/Cell Press

A pneumatic network, in red, is embedded within the octobot's entirely soft body and elastic arms, in blue. Ryan Truby, Michael Wehner, and Lori Sanders/Harvard University hide caption

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Ryan Truby, Michael Wehner, and Lori Sanders/Harvard University

By testing tumors, researchers hoped to identify women who could avoid chemotherapy without increasing their risk of a cancer recurrence. Voisin/Phanie/Science Source hide caption

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Voisin/Phanie/Science Source

Study Of Breast Cancer Treatment Reveals Paradox Of Precision Medicine

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Tropical Storm Colin brought big waves to Fort Myers Beach in Fort Myers, Fla., in early June. Given the threat of serious flooding, Gov. Rick Scott declared a state of emergency in the area. Joe Raedle/Getty Images hide caption

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Joe Raedle/Getty Images

Climate Change Complicates Predictions Of Damage From Big Surf

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