Bears May Rub Against Trees for Protection From Parasites

There are many reasons bears shimmy and scratch against trees. Sometimes they communicate by scent-marking trees, other times they’re removing hair and scratching that hard-to-reach itch. A new study posits…

Biden Clears the Way for Alaska Oil Project

WASHINGTON — The Biden administration on Wednesday took a crucial step toward approving an $8 billion ConocoPhillips oil drilling project on the National Petroleum Reserve in Alaska, drawing the anger…

To Prevent Cancer, More Women Should Consider Removing Fallopian Tubes, Experts Say

Those decisions were not easy. “I made the choice not to have any biological children, which was hard,” she said. “And I am still at risk for breast cancer.” But,…

EPA Waste Ban Blocks Pebble Mine Project in Alaska

The action is one of several recent moves by the Biden administration to protect environmentally sensitive lands from commercial interests. Last week, the administration moved to establish a 20-year moratorium…

The Navy’s Dolphins Have a Few Things to Tell Us About Aging

After completing Blue’s exam, Dr. Linnehan and her colleagues trudged back up the hill to their offices, the chatter of dolphins and sea lions fading behind them. But even indoors,…

Transgender Support App Launch

“A new support app designed specifically for the transgender community has been launched today. The app, called “TransGenX,” aims to provide a safe and supportive space for individuals who identify…

Why Dolphins Help Fishermen in Southern Brazil

Every summer in waters off the town of Laguna in Brazil’s southeast corner, fishers wade out into estuary canals to cast their nets in hopes of catching migratory mullet fish.…

Barbara Stanley, Influential Suicide Researcher, Dies at 73

Dr. Stanley wrote more than 200 papers. She was president of the International Academy for Suicide Research and served on boards and committees of many professional organizations. She also continued…

In the Fight Over Gas Stoves, Meet the Industry’s Go-To Scientist

Dr. Goodman, who holds a doctorate in toxicology from Johns Hopkins University, is one of the company’s most prominent scientists, helping to defend industries as varied as tobacco, plastics and…

New Blood Donation Rules to Loosen Restrictions on Gay and Bisexual Men

The F.D.A. said the new approach would be gender-inclusive — the screening would also apply to women who have sex with gay and bisexual men — and would focus on…