A 33-year-old man in Hong Kong was infected with the coronavirus a second time, more than four months after his initial infection, researchers report. His…
News published in “Science”
Positronium is positively puzzling. A new measurement of the exotic “atom” — consisting of an electron and its antiparticle, a positron — disagrees with theoretical…
The sooner, the better is an adage that’s especially true when treating viral infections. Usually, drugs that tamp down a virus are given within the…
Mars dust up Predicting dust storms on Mars will help keep rovers and future astronauts safe on the planet’s surface, Lisa Grossman reported in “How…
Back-to-school time is usually greeted with delight by children and parents. This year, school has become a hellscape of uncertainty due to the United States’…
After a decade of fits and starts, officials in the Florida Keys have voted to allow the first test in the United States of free-flying,…
The sun’s wispy upper atmosphere, called the corona, is an ever-changing jungle of sizzling plasma. But mapping the strength of the magnetic fields that largely…
Saving endangered species isn’t easy. Doing so requires the cooperation of many people — from scientists and conservation organizations to governments and local residents —…
For its last meal, an ancient marine reptile called an ichthyosaur may have bitten off more than it could chew. The dolphinlike creature was nearly…
Egyptian animal mummies can look like little more than bundles of cloth. Now high-tech X-rays have unveiled the mysterious life histories of three of these…