Science Times: In African Villages, These Phones Become Ultrasound Scanners

Plus: Gene-Edited Babies, a Hot Spot in Yellowstone and Giant Sea Spiders —

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Rodgers Ssekawoko Muhumuza, left, checked Owamani Bruce for pneumonia with a portable ultrasound scanner in the Kabale district in western Uganda. In African Villages, These Phones Become Ultrasound Scanners By DONALD G. MCNEIL JR. AND ESTHER RUTH MBABAZI A hand-held device brings medical imaging to remote communities, often for the first time.

Anastasiia Sapon for The New York Times Gene-Edited Babies: What a Chinese Scientist Told an American Mentor By PAM BELLUCK Stanford is investigating Stephen Quake's interactions with He Jiankui, the scientist who performed the controversial experiment. Josh Haner/The New York Times It's Warm and Stealthy, and It Killed Yellowstone Trees and Turned Soil Pale By ROBIN GEORGE ANDREWS A growing warm spot in a remote section of the national park was not unexpected, but it sneaked up on the park's volcanologists. Gilles Sabrié for The New York Times One Month, 500,000 Face Scans: How China Is Using A.I. to Profile a Minority By PAUL MOZUR In a major ethical leap for the tech world, Chinese start-ups have built algorithms that the government uses to track members of a largely Muslim minority group. Gracia Lam Personal Health After a Hip Fracture, Reducing the Risk of a Recurrence By JANE E. BRODY Following a fracture, patients should have a bone density test, evaluation of calcium and vitamin D levels and, in nearly all cases, medication to protect against further bone loss.

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Scott Kelly Spent a Year Taking Photos in Space. They're Beautiful. By SCOTT KELLY In orbit aboard the International Space Station, the astronaut wasn't just gathering data for NASA's Twins Study. He also produced some, well, stellar images. • Scott Kelly's Body Is Not Quite the Same That First Black Hole Seen in an Image Is Now Called Pōwehi, at Least in Hawaii By CHRISTOPHER MELE The word, which means "adorned fathomless dark creation," is derived from the Kumulipo, a centuries-old Hawaiian creation chant. • Darkness Visible, Finally: Astronomers Capture First Ever Image of a Black Hole Happy Hour at the Museum of Natural History for 2 'Science Nerds' By COREY KILGANNON For two researchers at the museum, closing time means the start of an anthropological happy hour that has yielded 10 books and scores of scientific articles and papers.

Should That Minor Planet Be Named Gonggong? Astronomers Want the Public's Help By JULIA JACOBS Stratolaunch, World's Largest Airplane by Wingspan, Takes Its First Flight By MIHIR ZAVERI Interior Dept. Opens Ethics Investigation of Its New Chief, David Bernhardt By CORAL DAVENPORT Q&A Our dog escaped from the car. How did he find his way home the next day from nearly three miles away? By C. CLAIBORNE RAY

Climate Change Timothy R. Dwyer (PolarTREC 2016)/ARCUS How Giant Sea Spiders May Survive in Warming Oceans By JOANNA KLEIN The strange creatures' adaptations to the cold of the Antarctic Ocean may also help them as their habitats heat up. Ivan Agerton/OceanX 'Dr. Seuss's Garden' Yields a Deep-Sea Discovery, but It Already Faces Threats By KENDRA PIERRE-LOUIS Researchers said Tuesday they had found two new species of coral in undersea canyons off New England, an area where ocean temperatures are expected to increase sharply because of global warming.

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Health Scott Camazine & Sue Trainor/Science Source Doctors Use Electrical Implant to Aid Brain-Damaged Woman By BENEDICT CAREY A pilot study offers "a very promising start" in the effort to help people recover from traumatic brain injuries. BSIP/UIG, via Getty Images You Need Vitamin D to Live. How Could This Woman Survive With None in Her Blood? By WUDAN YAN She had a series of bone fractures, but when doctors did blood tests, the supplements she took for treatment were nowhere to be found. Leandro Castelao A New Rx for Diabetes: Lighten Up By PAULA SPAN In older patients, rigorous lowering of blood sugar may offer few benefits and pose unexpected risks. • Lawmakers in Both Parties Vow to Rein In Insulin Costs Stern, et. al/New England Journal of Medicine Abnormal Levels of a Protein Linked to C.T.E. Found in N.F.L Players' Brains, Study Shows By KEN BELSON AND BENEDICT CAREY The research is the first step toward developing a diagnostic test that could identify brain-related injuries in living players. Getty Images Sitting for More Than 13 Hours a Day May Sabotage the Benefits of Exercise By GRETCHEN REYNOLDS People who sat for long periods and took fewer than 4,000 steps a day developed metabolic problems, even if they exercised. Living Art Enterprises/Science Source Most Osteoporosis Drugs Don't Build Bone. This One Does. By GINA KOLATA In clinical trials, Evenity substantially increased bone density and prevented fractures more effectively than available treatments, according to the drug makers' findings. John Taggart for The New York Times Measles Now By PERRI KLASS, M.D. On the frustration of pediatricians taking care of children suffering from a preventable disease. Janet Worne for The New York Times Healing Your Feet, and Finding a Balance in Following Doctor's Orders By AUSTIN FRAKT With plantar fasciitis and other ailments, a key is a realistic therapy routine you can fit into your day.

Medicare Aims to Expand Coverage of Cancer Care. But Is It Enough? By ROBERT PEAR As Ebola Cases Rise in Congo, the W.H.O. Declines to Issue Emergency Declaration By DENISE GRADY Children Are Swallowing Foreign Objects More Frequently, Study Finds By CHRISTINA CARON Paul Greengard, Nobel Prize-Winning Neuroscientist, Dies at 93 By DENISE GELLENE

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