Sharks might not be a natural biological group, with most species potentially closer kin to rays than to an oddball group of sharks.

A comprehensive analysis of submissions to the preprint server bioRxiv has revealed a steady growth in the number of scientists uploading their findings to the platform — while neuroscientists have ...

At the heart of today’s artificial-intelligence models are vast bodies of training data — text, videos and images created by real people and used to teach models how to recognize patterns and generate ...

If confirmed in people, the finding might lead to gut-targeted therapies that could reverse cognitive decline.