Science Times: Trolling the Monster in the Heart of the Milky Way

Plus: Why a 50-Degree Day Feels Colder in Fall Than in Spring —

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CreditC. Malin/European Southern Observatory Trolling the Monster in the Heart of the Milky Way By DENNIS OVERBYE Something very large and dark occupies the center of our galaxy, and new data suggest that it is indeed a black hole.

Desiree Martin/Agence France-Presse — Getty Images Stephen Hawking's Final Paper: How to Escape From a Black Hole By DENNIS OVERBYE In a study from beyond the grave, the theoretical physicist sings (mathematically) of memory, loss and the possibility of data redemption. Heidi Younger With Bugs, You're Never Home Alone By NICOLA TWILLEY A citizen-science project aims to catalog the spiders, insects and other many-legged creatures that live indoors with us. Annie Tritt for The New York Times He Promised to Restore Damaged Hearts. Harvard Says It Was Scientific Malpractice. By GINA KOLATA Findings that would have revolutionized treatment of heart attacks were based on falsified and fabricated data, revealing weaknesses in medical research. Jennifer Sens for The New York Times Why Private Equity Is Furious Over a Paper in a Dermatology Journal By KATIE HAFNER The sudden, unexplained removal of a research paper on private equity firms buying dermatology practices has raised questions about corporate influence.

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Isaiah J. Downing/USA Today Sports, via Reuters Here's Why a 50-Degree Day Feels Colder in Fall Than in Spring By NIRAJ CHOKSHI Why might nippy temperatures now feel much more comfortable in just a few months? The body takes time to adapt to the cold. Francois Savigny/Minden Pictures Divide and Preserve: Reclassifying Tigers to Help Save Them From Extinction By RACHEL NUWER Are there many subspecies of tiger, or only two? A correct accounting is the only way to preserve what is left of the animal's genetic diversity, some scientists say. ESA/GCP/UPV/EHU Bilbao A Volcanic Eruption on Mars? Nope. By KENNETH CHANG It's just a cloud. A very long cloud. Nobumichi Tamura Where Did Fish First Evolve? The Answer May Be Shallow By NICHOLAS ST. FLEUR They lacked jaws. Some had armor and spikes. And they were some of our earliest ancestors with spines in the shallow coasts around supercontinents. Boyoun Kim Why Are We Still Teaching Reading the Wrong Way? By EMILY HANFORD Teacher preparation programs continue to ignore the sound science behind how people become readers. Christopher Anderson/Magnum, for The New York Times Bruno Latour, the Post-Truth Philosopher, Mounts a Defense of Science By AVA KOFMAN He spent decades deconstructing the ways that scientists claim their authority. Can his ideas help them regain that authority today?

The Wildebeest Is One Highly Toned Machine By KAREN WEINTRAUB Why Textbooks May Need to Update What They Say About Birth Canals By STEPH YIN East Island, Remote Hawaiian Sliver of Sand, Is Largely Wiped Out by a Hurricane By JULIA JACOBS A.I. Is Helping Scientists Predict When and Where the Next Big Earthquake Will Be By THOMAS FULLER AND CADE METZ

Climate Change Photo Illustration by The New York Times Three Campaign Ads That Are Putting Climate Change on the Agenda By LISA FRIEDMAN Across the country, there's been a small explosion of campaign ads about global warming. Janie Osborne for The New York Times Scientists Push for a Crash Program to Scrub Carbon From the Air By BRAD PLUMER Scientists are increasingly warning that cutting emissions isn't enough. We'll also have to take billions of tons of carbon out of the atmosphere.

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Health Steven Senne/Associated Press Can Eating Organic Food Lower Your Cancer Risk? By RONI CARYN RABIN In a study, those who ate more organic produce, dairy, meat and other products had 25 percent fewer cancer diagnoses over all, especially lymphoma and breast cancer. Gracia Lam Personal Health Confused by Nutrition Research? Sloppy Science May Be to Blame By JANE E. BRODY According to a new book by Marion Nestle, the unstated goal of most company-sponsored studies is to increase the bottom line. Sarah Silbiger/The New York Times Trump Proposes to Lower Drug Prices by Basing Them on Other Countries' Costs By ROBERT PEAR The announcement, part of a flurry of initiatives from the White House ahead of the midterms, came after a government study found that Medicare is paying 80 percent more than other nations for drugs. Nicole Craine for The New York Times Why You Shouldn't Wait to Sign Up for Medicare Part B By PAULA SPAN Some people can delay, but many will end up paying financial penalties if they don't enroll when they turn 65. Here's an explanation of the confusing rules. Photo Illustration by Eric Helgas for The New York Times Why Is CBD Everywhere? By ALEX WILLIAMS Cannabidiol is being touted as a magical elixir, a cure-all now available in bath bombs, dog treats and even pharmaceuticals. But maybe it's just a fix for our anxious times. Angie Wang Why Sex Is Not Binary By ANNE FAUSTO-STERLING The complexity is more than cultural. It's biological, too.

Ask Well If the high-dose flu vaccine is more potent, why do I have to wait until I'm 65 to get it? By RICHARD KLASCO, M.D. F.D.A. Approves New Drug for Flu By DONALD G. MCNEIL JR. Even a 10-Minute Walk May Be Good for the Brain By GRETCHEN REYNOLDS Breast-Feeding Is Good for the Mother, and Not Just the Baby By RONI CARYN RABIN Amgen Slashes the Price of a Promising Cholesterol Drug By KATIE THOMAS Altria to Stop Selling Some E-Cigarette Brands That Appeal to Youths By SHEILA KAPLAN

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