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Kathy Niakan, a developmental biologist at the Francis Crick Institute in London, used the CRISPR gene editing technique to find out how a gene affects the growth of human embryos. Courtesy of The Francis Crick Institute hide caption

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Courtesy of The Francis Crick Institute

Editing Embryo DNA Yields Clues About Early Human Development

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University Studied How Men With Shaved Heads Are Perceived

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While benzodiazepines and SSRI antidepressants are not risk-free, says Yale psychiatrist Kimberly Yonkers, "it should be reassuring that we're not seeing a huge magnitude of an effect here" on pregnancy. Hanna Barczyk for NPR hide caption

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Hanna Barczyk for NPR

Xanax Or Zoloft For Moms-To-Be: A New Study Assesses Safety

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Matthew Rockloff and Nancy Greer give their acceptance speech after winning the Ig Nobel Economics Prize during ceremonies at Harvard University in Cambridge, Mass., on Thursday. The pair won for their experiments to see how contact with a live crocodile affects a person's willingness to gamble. Michael Dwyer/AP hide caption

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Michael Dwyer/AP

Experiments that showed how to make the H5N1 bird flu virus more contagious raised concern about malicious misuse of laboratory research. Science Photo Library/Getty Images hide caption

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Science Photo Library/Getty Images

Researchers set out to answer this question: Is there a safe level of alcohol consumption during pregnancy? Turns out, that's a hard question to answer. The advice remains: Don't risk it. Tim Clayton/Corbis/Getty Images hide caption

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Tim Clayton/Corbis/Getty Images

Is One Drink OK For Pregnant Women? Around The Globe, The Answer Is No

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A study of chemotherapy medicines produced by 10 companies found that, on average, each drug produced seven times as much revenue for its manufacturer as it cost in research and development. BrianAJackson/iStockphoto/Getty Images hide caption

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BrianAJackson/iStockphoto/Getty Images

R&D Costs For Cancer Drugs Are Likely Much Less Than Industry Claims, Study Finds

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For the first time, scientists have carefully analyzed all the critters in a kitchen sponge. There turns out to be a huge number. Despite recent news reports, there is something you can do about it. Joy Ho for NPR hide caption

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Joy Ho for NPR

So Your Kitchen Sponge Is A Bacteria Hotbed. Here's What To Do

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The blood-sucking conenose assassin bug (Triatoma sanguisuga) is also called a "kissing bug" because of its tendency to bite human faces. It feeds on human blood and is the vector of the parasite Trypanosoma cruzi, which causes Chagas disease. Ray Coleman/Science Source hide caption

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Ray Coleman/Science Source

Look deeply into those soulful eyes ... but watch out for that nose. When it comes time to decide whether to leave, this African wild dog may be trying to say more to its pack with the latter. Pim Stouten/Flickr hide caption

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Pim Stouten/Flickr

Young bodies may more easily rebound from long bouts of sitting, with just an hour at the gym. But research suggests physical recovery from binge TV-watching gets harder in our 50s and as we get older. Lily Padula for NPR hide caption

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Lily Padula for NPR

Get Off The Couch Baby Boomers, Or You May Not Be Able To Later

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Avi Ofer for NPR

How Moldy Hay And Sick Cows Led To A Lifesaving Drug

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Mowing the lawn can be good exercise, and is fun for some people. But others who find themselves squeezed for time might find the luxury of paying someone else to do it to be of much more value than buying more stuff. Kristen Solecki for NPR hide caption

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Kristen Solecki for NPR

Need A Happiness Boost? Spend Your Money To Buy Time, Not More Stuff

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Researchers aren't sure why strong relationships in adolescence seem to pay dividends later in life, but one hypothesis is that those bonds act as a buffer against depression and insults. Maria Fabrizio for NPR hide caption

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Maria Fabrizio for NPR

After surgeons removed a tumor from Dan Fabbio's brain, they gave him his saxophone — to see whether he'd retained his ability to play. A year after his surgery, Fabbio is back to work full time as a music teacher. YouTube/Screenshot by NPR hide caption

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YouTube/Screenshot by NPR

This Music Teacher Played His Saxophone While In Brain Surgery

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