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American biologist David Baltimore criticized a fellow scientist who claims he has edited the genes human embryos during the Second International Summit on Human Genome Editing at the University of Hong Kong. China News Service/VCG via Getty Images hide caption

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China News Service/VCG via Getty Images

Science Summit Denounces Gene-Edited Babies Claim, But Rejects Moratorium

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Researchers zeroed in on the ages of kids when they enrolled in kindergarten to investigate discrepancies in ADHD diagnoses. Westend61/Getty Images hide caption

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Youngest Children In A Class Are Most Likely To Get ADHD Diagnosis

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Researcher He Jiankui spoke Wednesday during the 2nd International Summit on Human Genome Editing in Hong Kong. Kin Cheung/AP hide caption

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Kin Cheung/AP

Facing Backlash, Chinese Scientist Defends Gene-Editing Research On Babies

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Shereese Hickson was diagnosed with multiple sclerosis in 2012 and is unable to work. She supports herself and her son, Isaiah, on $770 a month. Shane Wynn for KHN hide caption

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Shane Wynn for KHN

Chronically Ill, Traumatically Billed: $123,019 For 2 Multiple Sclerosis Treatments

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The Centers for Disease Control and Prevention traced an ongoing E. coli outbreak to the Central Coastal region of California. If you're sure your lettuce was grown elsewhere, you can eat it. Andrew Caballero-Reynolds/AFP/Getty Images hide caption

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Andrew Caballero-Reynolds/AFP/Getty Images

'The Beautiful Cure' Reveals The 'Profound' Power Of The Immune System

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Genetics researcher He Jiankui said his lab considered ethical issues before deciding to proceed with DNA editing of human embryos to create twin girls with a modification to reduce their risk of HIV infection. Critics say the experiment was premature. Mark Schiefelbein/AP hide caption

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Mark Schiefelbein/AP

Chinese Scientist Says He's First To Create Genetically Modified Babies Using CRISPR

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Romaine lettuce is displayed on a shelf at a supermarket in California in April, during an E. coli outbreak traced to contaminated lettuce. The CDC says a new outbreak has made lettuce dangerous to eat, just in time for America's most foodcentric holiday. Justin Sullivan/Getty Images hide caption

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Justin Sullivan/Getty Images

While recovering from treatment for aplastic anemia, Tiffany Rowe had her wish granted. She danced on stage with Michael Jackson during his Bad concert tour. Courtesy of Tiffany Rowe hide caption

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Courtesy of Tiffany Rowe

How Do Wishes Granted To Very Sick Kids Affect Their Health?

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Klute-Nelson takes a break with her dogs Kona (left) and Max. Morgan Walker for NPR hide caption

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Morgan Walker for NPR

As Insurers Offer Discounts For Fitness Trackers, Wearers Should Step With Caution

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Becky Shaw's first pregnancy ended in a miscarriage in 2014. The following year, she and her husband, Ben, had Parker, their "rainbow baby," as babies born after pregnancy loss are often called. Ruby Eliason Photography hide caption

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Ruby Eliason Photography

Research hasn't delivered a definitive answer on whether fish oil and Vitamin D supplements have health benefits, but it's clear that eating fish is beneficial. Enn Li Photography/Getty Images hide caption

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Enn Li Photography/Getty Images

FDA Commissioner Scott Gottlieb said he wants to ban menthol cigarettes because teenagers often become addicted to nicotine by smoking them. Joe Raedle/Getty Images hide caption

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Joe Raedle/Getty Images

FDA Seeks Ban On Menthol Cigarettes To Fight Teen Smoking

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