Science

Modern rodents range in size from pygmy mice weighing less than an ounce to stocky capybaras pushing 175 pounds. But even the largest capybara is a pipsqueak compared with some prehistoric rodents...

Unexplained hepatitis does not appear to have become more common among American children than it was before the Covid-19 pandemic began, according to a new review of three large medical databases by...

A remote-sensing satellite has detected one of the largest releases of methane from a single industrial site, an underground coal mine in south-central Russia. The finding is another indication of the scope...

La enfermedad puede variar en cuanto a su gravedad, pero para algunos quizás suponga un cambio de vida: la pérdida total del vello corporal, incluidas las pestañas y las cejas, e incluso...

KAMAKWIE, Sierra Leone — When Seio Bangura’s final high school exam results arrived not long ago, she learned she had earned grades high enough to get into college. It was a thrilling...

If a newborn child grows up hearing people speaking in many different languages, will it later be able to speak all those languages?— Puneesh T., IndiaChildren learn languages from the people around...

There are no environmental showstoppers in SpaceX’s plans to launch a giant new rocket to orbit from South Texas, the Federal Aviation Administration said on Monday.An environmental assessment by the agency has...

Taking a scan of an injured brain often produces a map of irretrievable losses, revealing spots where damage causes memory difficulties or tremors.But in rare cases, those scans can expose just the...

This is the final installment in the Visionaries series, which looks at figures who are trying to transform the way we live.Every year, humans pump around 50 billion tons of carbon dioxide...

The Food and Drug Administration said on Sunday that three doses of the Pfizer-BioNTech coronavirus vaccine appeared to be effective in preventing Covid illness in children under 5, judging by the level...