Joe Neel Joe Neel is NPR's deputy senior supervising editor and a correspondent on the Science Desk.

Mammography has helped increase the early detection of breast tumors. Now, researchers say, the goal is to discern which of those tumors need aggressive treatment, including chemotherapy or radiation after surgery. Chicago Tribune/Getty Images hide caption

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Chicago Tribune/Getty Images

Tumor Test Helps Identify Which Breast Cancers Don't Require Extra Treatment

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A new study finds that being overweight may decrease a person's life span. Zena Holloway/Getty Images hide caption

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Zena Holloway/Getty Images

Carrying Some Extra Pounds May Not Be Good After All

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Rep. Tom Price (center) appeared in early 2016 before the House Rules Committee, when he sponsored legislation that would repeal President Obama's signature health care law. J. Scott Applewhite/AP hide caption

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J. Scott Applewhite/AP

Diazepam, also known as Valium, is used to treat anxiety and insomnia. But when combined with opioids, it can suppress breathing and cause death. Universal Images Group/Getty Images hide caption

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Universal Images Group/Getty Images

The FDA says that facilities that collect blood donations throughout the United States should be testing donations for Zika within 12 weeks. Toby Talbot/AP hide caption

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Toby Talbot/AP

All U.S. Blood Donations Should Be Screened For Zika, FDA Says

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A Pennsylvania woman developed a urinary tract infection cased by Escherichia coli bacteria that were found to be resistant to colistin, an antibiotic that is seen as the last line of defense. Nature's Geometry/Science Source hide caption

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Nature's Geometry/Science Source