A factory making Jynneos, the safest vaccine, has been closed since August, threatening global supplies as the virus spreads.
Fossils found in southwestern China give a hint to the development of the panda’s sixth digit — a rudimentary, thumblike bone extension.
Two different ancient wolf populations contributed DNA to modern dogs, according to a new study.
States will be given vaccine doses from the federal stockpile, but supplies of the safest type are limited.
The gene-editing technology has led to innovations in medicine, evolution and agriculture — and raised profound ethical questions about altering human DNA.
Demand for medication abortion is surging, setting the stage for new legal battles.
In a small study, researchers in an olfaction lab found that people who had an instant personal connection also had similarities in their body odors.
Recent studies in humans and mice have shown that late nights and early mornings may cause long lasting damage to your brain.
Researchers found bacterial cells so large they are easily visible to the naked eye, challenging ideas about how large microbes can get.
Tortoises and turtles don’t just live for a long time — they barely age while they live.
Three sisters braved lions, crocodiles, poachers, raging rivers and other dangers on a 1,300-mile transnational effort to forge a new dynasty.
The E.U. has prohibited some pigments, deeming them potentially hazardous to humans. Artists and manufacturers around the world are struggling to find replacements.
The vaccines seem safe for children and are likely to protect against severe illness. But data on efficacy are thin, and most children have already been infected.
As a new version of bird flu spread through North America this spring, scientists began finding the virus in red foxes, bobcats and other mammals.
The cancer eventually will become the third most common type among women, experts say. The mortality rate is highest among Black Americans.
Some scientists believe that a clearer picture of Covid vaccine efficacy could have emerged sooner if investigators had tracked certain immune cells, not just antibodies.
A new survey of the nation’s abortion providers found increases in every region of the country from 2017 to 2020.
A new study finds that the feline reaction to catnip and silver vine helps to stave off mosquitoes and other bloodsucking insects.
The particle collider at CERN will soon restart. “There could be a revolution coming,” scientists say.
Patients whose brain injury coincidentally relieved their nicotine cravings may help unravel the neural underpinnings of addiction, a new study suggests.
The F.D.A. is also reviewing the treatment, Albrioza, but the agency’s scientists have raised questions about its effectiveness.
For two years, an array of six underwater microphones tracked the feeding noises of marine mammals newly prevalent in New York waters.
The virus “is not known to linger in the air,” agency officials said. But the research is far from definitive.
Most of the state abortion prohibitions that would go into effect if Roe v. Wade is overturned do not contain carve-outs that were once widely supported by abortion opponents.
An abrupt change in C.D.C. guidance underscores a little-known phenomenon: On occasion, monkeypox can be transmitted through aerosols, similar to the coronavirus.
The origin of the domestic fowl is more recent than previously thought, but it may have taken them thousands of years to become food.
Dr. Kevin M. Cahill performed abusive and unnecessary examinations, a former patient claims in a lawsuit, and pursued her romantically for years. His lawyer says the exams were appropriate.
In myth, the cryptocurrency is egalitarian, decentralized and all but anonymous. The reality is very different, scientists have found.
Your pupils may be dilating when you see images like this one as your brain tries to anticipate the near future.
As the number of cases outside Africa approaches 800, governments are scrambling for a limited pool of vaccines and treatments with unclear effectiveness.
Evolutionary theories said giraffes developed their height to get to better eats, but ancestors may have gained the advantage through head-butting battles.
3DBio Therapeutics, a biotech company in Queens, said it had for the first time used 3-D printing to make a body part with a patient’s own cells.
A 4-year-old in Ohio is one of hundreds of children worldwide who have developed unexplained liver problems in recent months.
The species is called Poseidon’s ribbon weed, and researchers say it has spread to cover an area the size of Cincinnati over the past 4,500 years.
Last year, people 65 and older died from Covid at lower rates than in previous waves. But with Omicron and waning immunity, death rates rose again.
The largest shark that ever lived may have vanished in part because the comparatively smaller great white had a taste for the same prey.
MDMA-assisted treatment for post-traumatic stress disorder “represents real hope for long-term healing,” health experts say.
Some people may test positive for the coronavirus for 10 days or longer, but interpreting those results remains difficult, experts said.
Scientists directly measured the metabolic rate of extinct animals, which revealed that some giant dinosaurs became coldblooded.
A campaign is circulating a list of dozens of researchers in the hopes they will be denied the prestige of election into the Russian Academy of Sciences.
Older people who received smallpox vaccinations may yet have some immunity, researchers say. Healthy children and adults generally do not become severely ill.
Scientists have improved their ability to send quantum information across distant computers — and have taken another step toward the network of the future.
In India, the large mammals see trash in village dumps as a buffet, but researchers found they are inadvertently consuming packaging and utensils.
The United States has stockpiled millions of doses of two smallpox vaccines, also effective against monkeypox. But the outbreaks so far are clustered in other countries.
The Mekong River is home to enormous and endangered aquatic life. A 400-pound fish’s release shows how some conservation efforts in Cambodia are paying off.
The puzzling coronavirus cases highlight ongoing surveillance challenges and blind spots.
Millions of Americans take aspirin to prevent a first heart attack or stroke. Now, doctors are advising against it — especially for people over 70.
The transition was announced in a letter to agency employees, but details were scant.
Some girls are starting to develop breasts as early as age 6 or 7. Researchers are studying the role of obesity, chemicals and stress.
More than 1,200 species of arachnids are part of a largely unregulated global marketplace, according to a new study.