Science Times: To Map a Coral Reef, Peel Back the Seawater

Plus: Who Were the Ancestors of Native Americans? —

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The Global Airborne Observatory, a lidar-equipped laboratory designed to map coral reefs from above, flying over St. Croix, U.S. Virgin Islands. Marjo Aho/The Nature Conservancy To Map a Coral Reef, Peel Back the Seawater By PAUL TULLIS This scientist couple created an airborne observatory to map tropical forests. Now they're using it to identify threatened reefs.

Patrick T. Fallon for The Washington Post, via Getty Images A Judge Rules Against One Stem-Cell Clinic. There Are Hundreds of Them. By DENISE GRADY In a long-sought victory for the F.D.A., a federal judge said officials have the authority to regulate stem-cell treatments made from patients' own fat. Sikora et al. Who Were the Ancestors of Native Americans? A Lost People in Siberia, Scientists Say By CARL ZIMMER Genetic analysis of ancient teeth and bones suggests Native Americans largely descend from a vanished group called the Ancient Paleo-Siberians. Godrey Argent Studio, via The Royal Society Overlooked No More: Alan Turing, Condemned Code Breaker and Computer Visionary His ideas led to early versions of modern computing and helped win World War II. Yet he died as a criminal for his homosexuality. Andrea Mantovani for The New York Times 'Archaeology of D-Day' Aims to Preserve What the Soldiers Left Behind By ADAM NOSSITER For the past 10 years, a cadre of field researchers in France has been digging up, documenting and cataloging the physical remains of the Normandy invasion.

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Jaime Chaves The Vampire Birds of the Galápagos Have Fascinating Inner Lives By JOSHUA SOKOL Yes, there is such a thing as a vampire finch. Roscosmos,via NASA Want to Buy a Ticket to the Space Station? NASA Says Soon You Can By KENNETH CHANG NASA plans to open the International Space Station to commercial business, including tourism. But the tickets won't be cheap. • One Small Tweet for Trump, One Giant Question for NASA's Moon Plans Hoi-Lam Jim/Vetmeduni Vienna Elephants May Sniff Out Quantities With Their Noses By VERONIQUE GREENWOOD Understanding how the endangered mammals smell the world could help with their conservation, researchers say. Qwert1234, via Wikimedia Commons Solving a Leafy Mathematical Mystery By CARA GIAIMO Researchers developed a model that explains a peculiar pattern found in a shrub common in Japan. Library of Congress How Nuclear Bomb Tests Are Helping to Identify Art Forgeries By NIRAJ CHOKSHI Using radiocarbon dating, scientists can uncover counterfeit artworks using smaller than ever samples of canvas and paint chips. David Baillot/UC San Diego Jacobs School of Engineering Meet the Deep-Sea Dragonfish. Its Transparent Teeth Are Stronger Than a Piranha's. By WUDAN YAN Researchers say the tiny crystalline structures in the predator's fangs could inspire strong, see-through materials.

Paralysis on America's Rivers: There's Too Much Water By MITCH SMITH The Revered Crocodiles of This Island Nation Have Suddenly Started Killing People Photographs and Text by MATTHEW ABBOTT

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Climate Change Source: Messina, Brady et al. Nature Microbiology How Dengue, a Deadly Mosquito-Borne Disease, Could Spread in a Warming World By KENDRA PIERRE-LOUIS AND NADJA POPOVICH Climate change and urbanization could increase the number of people at risk of contracting dengue fever, a mosquito-borne disease that can be deadly. Andrew Harnik/Associated Press White House Tried to Stop Climate Science Testimony, Documents Show By LISA FRIEDMAN Administration officials said proposed testimony by a State Department scientist amounted to "climate alarm propaganda."

Health Getty Images Diet for One? Scientists Stalk the Dream of Personalized Nutrition By CYNTHIA GRABER AND NICOLA TWILLEY No single food regimen works for everyone. A new study is the most comprehensive effort yet to understand why. Deadly Germs, Lost Cures Warning of 'Pig Zero': One Drugmaker's Push to Sell More Antibiotics By DANNY HAKIM AND MATT RICHTEL Overuse of antibiotics in livestock has given rise to drug-resistant germs. Drugmakers say they want to be part of the solution. But a recent campaign urged farmers to administer the drugs to healthy animals daily. Gracia Lam Personal Health Insomnia Can Kill You By JANE E. BRODY Chronic insomnia is linked to an increased risk of developing hypertension, Type 2 diabetes, heart attack, depression, anxiety and premature death. Stuart Briers The Elderly Are Getting Complex Surgeries. Often It Doesn't End Well. By PAULA SPAN Complication rates are high among the oldest patients. Now a surgeons' group will propose standards for hospitals operating on the elderly. iStock Children's Safety on Wheels By PERRI KLASS, M.D. On bikes and scooters, "the best way to prevent an injury is to wear a helmet, and children need to follow the rules of the road," an expert says. Getty Images Even One Extra Walk a Day May Make a Big Difference By GRETCHEN REYNOLDS For older women, walking as few as 4,500 steps a day reduced mortality compared with those who took only 2,700 steps a day.

What Is the Hyde Amendment? A Look at Its Impact as Biden Reverses His Stance By MAGGIE ASTOR Trump Administration Sharply Curtails Fetal Tissue Medical Research By ABBY GOODNOUGH Even One Extra Walk a Day May Make a Big Difference By GRETCHEN REYNOLDS How Safe Is Sunscreen? By AARON E. CARROLL

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