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, ...

A look at the surreal landscapes of Socotra, home to some of the most unusual and alien-looking trees on Earth. Known for their unique umbrella-like shapes and remote environment, these ancient trees ...

"Star Wars" has a seemingly never-ending supply of alien designs. However, these five are the worst of the bunch, falling ...

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 ...