For generations, artists and science-fiction writers have imagined alien landscapes beneath twin sunsets. The image became ...

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

Earth hosts a variety of alien-like species, from the ribbon worm and syphonophore to the carnivorous pitcher plant and star-nosed mole, showcasing extreme adaptations. After being arrested, Chinese ...

The spread of species beyond their native habitat is a human-made environmental change on a global scale. Among vascular plants, over 16,000 species have now permanently settled in foreign countries.