Science Times: How to Stop Poaching of Endangered Species? Forget the ‘Kingpins.’

Plus: On Ecstasy, Octopuses Reached Out for a Hug —

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Chumlong Lemtongthai, a Thai national convicted in South Africa in a rhino-hunting scheme. via Julian Rademeyer How to Stop Poaching of Endangered Species? Forget the 'Kingpins.' By RACHEL NUWER Authorities keep arresting people said to be bosses of wildlife trafficking, but that isn't making a dent in the problem.

Eurelios/Science Source Why Your DNA Is Still Uncharted Territory By CARL ZIMMER Scientists are focusing on a relatively small number of human genes and neglecting thousands of others. The reasons have more to do with professional survival than genetics. Esther Horvath Ice Surveys and Neckties at Dinner: Here's Life at an Arctic Outpost By ESTHER HORVATH AND HENRY FOUNTAIN Danish soldiers, scientists and two very sturdy dogs are the only residents of Station Nord in Greenland. Like any remote outpost, there are quirky rules and rituals. Ken Lucas, via Getty Images On Ecstasy, Octopuses Reached Out for a Hug By JOANNA KLEIN By dosing the tentacled creatures with MDMA, researchers found they share parts of an ancient messaging system involved in social behaviors with humans. Gracia Lam Personal Health Heart Disease in a Heart-Healthy Life By JANE E. BRODY Lessons from Jane Brody's brother: Being trim and athletic doesn't always mean your coronary arteries are in great shape.

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JAXA Hayabusa2 Drops Rovers Onto Asteroid Ryugu By JONATHAN CORUM Japan's Hayabusa2 spacecraft is exploring Ryugu, an asteroid thought to contain material from the early solar system. Drew Angerer for The New York Times Decoding Pandas' Come-Hither Calls By DOUGLAS QUENQUA During mating season, the solitary mammals bleat important information to each other through their dense bamboo habitat. Steve Lonhart/Noaa What 13,000 Patents Involving Sea Life DNA Tell Us About the Future By HEATHER MURPHY Whether a single private entity should be able to set the direction of how the genes of so many living things are used was a piece of a broader debate at the United Nations this month. Jeffrey Decoster A Nobel Laureate Asks What Makes a 'Disordered Mind' By ALAN JASANOFF In his new book, the neuroscientist Eric Kandel explores the science of unusual brains, locating many of his answers in genetics. Dr. Tony Brain/Science Source Giving Malaria a Deadline By NICHOLAS WADE With a new genetic tool, scientists move a step closer to eradicating mosquitoes and the deadly diseases they carry. Andrey Nekrasov, via Getty Images In the Garden of Eels By JAMES GORMAN Garden eels anchor themselves in the sand, which helps them feed on drifting plankton in strong currents.

Sexual Harassment Allegations Wipe a Name Off the Map By JENNIFER MEDINA Lagoons of Pig Waste Are Overflowing After Florence. Yes, That's as Nasty as It Sounds. By KENDRA PIERRE-LOUIS NASA's TESS Starts Collecting Planets By DENNIS OVERBYE Elephant Tusk DNA Helps Track Ivory Poachers By KAREN WEINTRAUB 'Highly Aggressive' Green Crabs From Canada Menace Maine's Coast By MELISSA GOMEZ Q&A I just saw a single monarch butterfly in a tree in my Brooklyn garden. What was it doing there? By C. CLAIBORNE RAY

Climate Change Syed Tasfiq Mahmood With Climate Change No Longer in the Future, Adaptation Speeds Up By JEFFREY BALL Experts have for years debated the priority of preventing climate change versus adapting to it, but both sides now agree that adjustment is crucial. Tyler Lariviere/Chicago Sun-Times, via Associated Press A Rise in Murder? Let's Talk About the Weather By JEFF ASHER The correlation between heat and crime suggests the need for more research on shootings in American cities.

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Health Steve Gschmeissner/Science Source Trial by Fire: Critics Demand That a Huge Sepsis Study Be Stopped By RONI CARYN RABIN A trial enrolling new patients resembles "an experiment that would be conducted on laboratory animals," one advocacy group said. University of Illinois Kidney Stones Are More Beautiful Than You Might Think By EMILY BAUMGAERTNER New research found that the painful deposits are surprisingly dynamic, forming much like microscopic coral reefs, and could help with treating them. Kent Nishimura/The Denver Post, via Getty Images Tiny Device Is a 'Huge Advance' for Treatment of Severe Heart Failure By GINA KOLATA A clip used to repair damaged heart valves sharply reduced deaths among patients with a grim prognosis. Christopher Capozziello for The New York Times The Couple Who Helped Decode Dyslexia By KATIE HAFNER In 1983, Sally and Bennett Shaywitz began studying the reading skills of more than 400 children. The subjects are in their 40s now, and the Shaywitzes are still tracking them. Hilary Swift for The New York Times Faster. Slower. How We Walk Depends on Who We Walk With, and Where We Live. By GRETCHEN REYNOLDS Men tend to walk differently with other men than with women. And Americans walk faster with children, whereas Ugandans move more leisurely. Lucy Nicholson/Reuters Congratulations. Your Study Went Nowhere. By AARON E. CARROLL Researchers should embrace negative results instead of accentuating the positive, which is one of several biases that can lead to bad science.

Ask Well Having had all the common childhood illnesses, such as measles and mumps, 70-plus years ago, how much immunity do I still retain? By RICHARD KLASCO, M.D. 'Latent' Tuberculosis? It's Not That Common, Experts Find By DONALD G. MCNEIL JR. New Approach to Breast Reconstruction May Reduce Pain and Weakness for Some By RONI CARYN RABIN Fish Oil Drug May Reduce Heart Attack and Stroke Risks for Some By ANAHAD O'CONNOR

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