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Editing DNA has never been easier. Pasieka/Science Photo Library/Corbis hide caption

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Pasieka/Science Photo Library/Corbis

Gene Editing Tool Hailed As A Breakthrough, And It Really Is One

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While serving in Congress, Jay Dickey sponsored legislation that effectively restricts spending for research on firearms deaths. Spencer Tirey/AP hide caption

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Spencer Tirey/AP

Congress Still Limits Health Research On Gun Violence

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Chris Nickels for NPR

A Controversial Rewrite For Rules To Protect Humans In Experiments

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An image from the Allen Institute's Brain Explorer shows gene expression across the human brain. Courtesy of Allen Institute For Brain Science hide caption

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Courtesy of Allen Institute For Brain Science

A Genetic Map Hints At What Makes A Brain Human

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Human stem cells, in this case made from adult skin cells, can give rise to any sort of human cell. Some scientists would like to insert such cells into nonhuman, animal embryos, in hopes of one day growing human organs for transplantation. Science Source hide caption

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Science Source

Should Human Stem Cells Be Used To Make Partly Human Chimeras?

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The Svalbard Global Seed Vault was opened on Feb. 26, 2008. Carved into the Arctic permafrost and filled with samples of the world's most important seeds, it's a Noah's Ark of food crops to be used in the event of a global catastrophe. AFP/Getty Images hide caption

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AFP/Getty Images

This genetically modified yeast can convert sugar into powerful opioid drugs. Scientists working with the modified yeast strains are required to register them with the Drug Enforcement Administration and keep the yeast under lock and key. Courtesy of Christina Smolke/Stanford University hide caption

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Courtesy of Christina Smolke/Stanford University

Engineers Make Narcotics With Yeast. Is Home-Brewed Heroin Next?

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Researcher John Clements in the early 1980s, after he figured out that lungs need surfactants to breathe. David Powers/Courtesy of UCSF hide caption

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David Powers/Courtesy of UCSF

How A Scientist's Slick Discovery Helped Save Preemies' Lives

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A nanosecond pulsed laser beam starts the photoacoustic imaging process. Geoff Story/Courtesy of Washington University in St. Louis hide caption

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Geoff Story/Courtesy of Washington University in St. Louis

A Scientist Deploys Light And Sound To Reveal The Brain

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Nephrologist Mitchell Lunn (left) and OB-GYN Juno Obedin-Maliver want to hear about the health issues on the minds of members the LGBTQ community. Susan Merrell/Courtesy of UCSF hide caption

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Susan Merrell/Courtesy of UCSF

Researchers say that inside the head of the worm C. elegans, an antenna-like structure at the tip of the AFD neuron (highlighted in green) is the first identified sensor for Earth's magnetic field. Andrés Vidal-Gadea hide caption

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Andrés Vidal-Gadea