It is often suggested that anyone who finds one of these invasive worms should kill it (carefully). Here's what else to know.

Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for first contact with extraterrestrial life.

When most people imagine a bird, they picture an animal with feathers, wings, and a beak perched on a tree branch. However, ...

For generations, science fiction has imagined what life might look like on other worlds. These aliens are fictional, sure, but some of them are informed by real evolutionary processes on Earth. That's ...