For nearly two decades, a rotating cast of chimpanzees, bonobos, gorillas, and orangutans at Leipzig Zoo sat through hundreds of cognitive experiments: hiding games that tested whether they could ...

An unusual hypothetical question has captured the internet’s collective imagination in recent weeks, generating thousands of reactions across social media platforms. The scenario in question, whether ...

A coalition of anti-abortion legislators is calling for an end to human embryonic stem cell research at the National Institutes of Health, reviving a debate on the ethical use of aborted fetal ...