STANFORD, Calif. (KGO) -- If you ever come face-to-face with the wrong kind of shark, there's something you probably want to avoid. Just a hint: they're long and really sharp. But now, researchers at ...

Since the Earth began, it has been home to millions of species that modern day humans would struggle to comprehend. Throughout history, our planet has undergone five mass extinction events. An ...

If current extinction trends continue, global shark populations will lose much of their variety, thereby threatening ecosystems where specialized species serve vital roles, researchers have found. In ...

In 1973, researchers scientifically described a species of shark based on a single specimen: a pregnant female caught a few years earlier by a fisherman near the mouth of the Gogol River in Astrolabe ...

Researchers spotted a shark off the Antarctic Peninsula for the first time ever, swimming at a depth so deep the sun could not reach it.