A new study casts doubt on the universe’s accelerating expansion, suggesting dark energy might be weakening over time.

Nearly 16 million head CT scans were ordered by emergency rooms in 2022, up from under 8 million in 2007, researchers reported in a new study.

“While BMI thresholds have been used to limit access to joint replacement surgery, our findings do not support restricting higher BMI patients from accessing shoulder replacement surgery,” senior researcher Dr. Jonathan Rees, director of the Botnar Institute for Musculoskeletal Sciences at the University of Oxford, said in a news release.

Students preparing to study abroad often have long checklists, but the experience of learning and living in another country can be challenging in unexpected ways.

Brain implants that deliver electric pulses can ease depression in people who aren't responding to psychiatric drugs, a new study says.

New evidence shows how the Epstein-Barr virus can hide in B cells and drive the core autoimmune response in lupus, pointing to the common virus as a possible cause.

A new study has found people exposed to the recommended levels of fluoride in drinking water do not experience negative cognitive impacts.

Leading AI models from OpenAI, Meta, Anthropic and Google described subjective, self-aware experiences when settings tied to deception and roleplay were turned down.

Brexit has caused almost twice as much damage to the UK economy than estimated by official forecasts, according to new paper from a group of experts including a senior Bank of England economist.

People who needed a root canal saw an improvement in cholesterol, blood sugar and other factors after getting the dental procedure.