Kur virusi që shkakton mpox u hodh në skenën ndërkombëtare në vitin 2022, vendet në mbarë botën, përfshirë Shtetet e Bashkuara, iu drejtuan vaksinave që synonin virusin e lisë së lidhur ngushtë për të frenuar përhapjen e tij. Megjithatë, deri në vitin 2024, Afrika, kontinenti ku u shfaq virusi dhe filloi të përhapet fillimisht mes … Read more
A barrage of intense, wild swings in climate conditions may have fueled the largest mass extinction in Earth’s history. A re-creation of how ancient sea surface temperatures, ocean and atmosphere circulation, and landmasses interacted revealed an Earth plagued by nearly decade-long stints of droughts, wildfires and flooding. Researchers knew that a spike in global temperatures … Read more
The biggest clash in cosmology might be inching closer to resolution, thanks to the James Webb Space Telescope. Scientists disagree over the universe’s expansion rate, known as the Hubble constant. There are two main methods for measuring it — one based on exploding stars called supernovas and the other on the universe’s oldest light, the … Read more
Mayonnaise’s texture inspires love and loathing. Either way, it’s perfect for physics experiments. The classic condiment is useful for understanding how materials behave, not only when smeared on sandwiches or plopped in potato salads, but also when deployed in nuclear fusion experiments. Mechanical engineer Arindam Banerjee of Lehigh University in Bethlehem, Pa., and colleagues are … Read more
Heat-related deaths in the United States are on the rise. But how bad will it be 20, 30 or 40 years from now? Scientists now have a clue. Currently, an estimated 8,000-plus deaths in the United States every year are associated with extreme temperatures, both hot and cold. Within the next few decades, that number … Read more
Scientific clockmakers have crafted a prototype of a nuclear clock, hinting at future possibilities for using atomic nuclei to perform precise measurements of time and make new tests of fundamental physics theories. While the definition of a “clock” is scientifically hazy, the prototype is not yet used to measure time. So it technically should be … Read more
One of the world’s richest biodiversity hot spots is Peru’s Madre de Dios, a region of the Amazon nestled at the base of the Andes mountains. When biogeochemist Jacqueline Gerson first traveled there in 2017, she found herself on a boat headed downstream through the forest. As the riverbanks passed by, she observed a scenic … Read more
It was as a Ph.D. student that Dionna Williams realized the fundamental flaws in how medical science treats people who have HIV and also use illicit drugs or misuse prescription drugs. People in this group often have worse outcomes than people with HIV who don’t use these drugs. Drug use and addiction have been linked … Read more
For the first time, astronomers have watched gas boil and bubble on the surface of a distant star. Scientists observed the red giant star R Doradus with the Atacama Large Millimeter/submillimeter Array, or ALMA, in Chile over the course of four weeks in July and August 2023. The series of images shows large cells of … Read more
Opposing fountains of plasma and particles spanning 23 million light-years are the longest pair of black hole jets ever seen. That’s far enough to influence the evolution of the universe on cosmic scales, astronomers report September 18 in Nature. “Traditionally, astronomers believed all jets remain within, or at least very close to, their host galaxy,” … Read more