For decades, theoretical particle physicists have struggled with vexing calculus problems called Feynman integrals. They are central to every calculation they make—from predicting how magnetic a particle called the muon should be , to estimating the rate at which Higgs bosons should emerge at the Large Hadron Collider (LHC). Now, theorists have found a way...

Stanford University has launched an investigation of possible research misconduct in several papers co-authored many years ago by its president, neuroscientist Marc Tessier-Lavigne, after the school’s student newspaper raised questions about potentially manipulated images in the articles, published long before he came to the school. The university “will assess...

On 2 October, Haiti announced that cholera had returned to the country . Memories from the previous epidemic, which killed close to 10,000 Haitians between 2010 and 2019, are still raw; now, with violent gangs fighting for control over the country and the health system in disarray, things could again get very bad. A few days later, Lebanon reported its first...

A tiny broken bone, misidentified for decades, has upended scientists’ view of bird evolution. For nearly 200 years, zoologists have divided birds into two categories: those with mobile joints in their upper jaw that allow their upper beak to move, and a much smaller group, including ostriches and emus, with a fused upper palate that gives them a less agile upper beak. This fused...