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Scientists Discover New Disease Caused By Prion Protein

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Shown a realistic human target — not just a silhouette like this one — shooters were more likely to pull the trigger if the target was black, according to an analysis of 42 studies. "Even if you think that you're not prejudiced," says researcher Yara Mekawi, "that doesn't necessarily mean that that's true in terms of split-second decisions that you might make in the real world." Joshua Lott/Getty Images hide caption

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Joshua Lott/Getty Images

Shooters Quicker To Pull Trigger When Target Is Black, Study Finds

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Scientific Findings Often Fail To Be Replicated, Researchers Say

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Male and female tungara frogs. Among these frogs, the guy with the best call usually wins the gal — except when you throw a third-choice loser into the mix. Alexander T. Baugh/Encyclopedia of Life hide caption

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Alexander T. Baugh/Encyclopedia of Life

Froggy Went A-Courtin', But Lady Frogs Chose Second-Best Guy Instead

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Male treehoppers make their abdomens thrum like tuning forks to transmit very particular vibrating signals that travel down their legs and along leaf stems to other bugs — male and female. Courtesy of Robert Oelman hide caption

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Courtesy of Robert Oelman

Good Vibrations Key To Insect Communication

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Heroin sold in the U.S., like this dose confiscated in Alabama last fall, is often cut with other drugs. Tamika Moore/AL.com/Landov hide caption

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Tamika Moore/AL.com/Landov

Illicit Version Of Painkiller Fentanyl Makes Heroin Deadlier

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Michael Arnott, of Cambridge, Mass., says he used to have trouble staying awake on long drives. Sleep specialists discovered he has obstructive sleep apnea, though not for the most common reasons — he isn't overweight, and doesn't smoke or take sedatives. M. Scott Brauer for NPR hide caption

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M. Scott Brauer for NPR

Snooze Alert: A Sleep Disorder May Be Harming Your Body And Brain

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'Science Of Mom': Scientist Sorts Through Studies So Parents Don't Have To

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A Hot Bath Could Help Grocery-Store Tomatoes Keep Their Flavor

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Social Scientists Develop Profile To Spot Likely Tax Evaders

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Study Suggests Some Treatment For Early Breast Cancer Is Unnecessary

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Katherine Streeter for NPR

Can Health Care Be Cured Of Racial Bias?

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African forest elephants stampede in the Central African Republic jungle. Courtesy of Cornell Lab or Ornithology hide caption

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Courtesy of Cornell Lab or Ornithology

To Decode Elephant Conversation, You Must Feel The Jungle Rumble

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