The human brain is so complex that scientific brains have a hard time making sense of it. A piece of neural tissue the size of a grain of sand might be packed with hundreds of thousands of cells linked together by miles of wiring. In 1979, Francis Crick, the Nobel-prize-winning scientist, concluded that the anatomy…
Getting vaccinated against shingles can reduce the risk of developing dementia, a large new study finds. The results provide some of the strongest evidence yet that some viral infections can have effects on brain function years later and that preventing them can help stave off cognitive decline. The study, published on Wednesday in the journal…
El miércoles, un equipo internacional de astrónomos desveló la prueba más convincente hasta la fecha de que la energía oscura —un misterioso fenómeno que impulsa a nuestro universo a expandirse cada vez más rápido— no es una fuerza constante de la naturaleza, sino una fuerza que sube y baja a través del tiempo cósmico. Según…
An international team of astronomers on Wednesday unveiled the most compelling evidence to date that dark energy — a mysterious phenomenon pushing our universe to expand ever faster — is not a constant force of nature but one that ebbs and flows through cosmic time. Dark energy, the new measurement suggests, may not resign our…
Dangerous pathogens left unsecured at labs across Africa. Halted inspections for mpox, Ebola and other infections at airports and other checkpoints. Millions of unscreened animals shipped across borders. The Trump administration’s pause on foreign aid has hobbled programs that prevent and snuff out outbreaks around the world, scientists say, leaving people everywhere more vulnerable to…
The Trump administration’s decision to withdraw foreign aid and dismantle the U.S. Agency for International Development is likely to cause enormous human suffering, according to estimates by the agency itself. Among them: up to 18 million additional cases of malaria per year, and as many as 166,000 additional deaths; 200,000 children paralyzed with polio annually,…
An obscure but influential program that gave detailed public health information to about half of the world’s nations will fold as a result of the Trump administration’s freeze on foreign aid. With funding from the United States Agency for International Development, the Demographic and Health Surveys were the only sources of information in many countries…
Astute skywatchers may have already seen the striking line of planets across the night sky in January. This week Mercury joins the queue. Now every other world in our solar system will be visible among the stars at the same time — if you know where to look. According to Gerard van Belle, director of…
At the nation’s borders, federal workers keep the country safe in many ways: Some investigate sick passengers. Some examine animals for dangerous pathogens. And some inspect plants for infestations that could spread in this country. Late last week, the Trump administration dispatched hundreds of those federal employees with the same message that colleagues at other…
Pope Francis, who remains hospitalized, has bilateral pneumonia, the Vatican said on Tuesday. The term simply means pneumonia in both lungs, said Dr. James Musser, director of the center for infectious diseases at the Houston Methodist Research Institute. He added that, without examining a patient, he could not say anything specific about his condition. In…