Scientists discovered true teeth growing on the head of the spotted ratfish, a distant shark relative. The toothed structure, called a tenaculum, helps males hold onto females during mating. Genetic ...

A study published in Science Advances and led by the Max Planck Institute of Geoanthropology, uncovers how flexibility made ...

We’re often told that compromise is the secret to a healthy relationship. It’s the word tossed into every bit of relationship advice, from couples therapy to wedding toasts. And while compromise is ...