The vast majority of our planet remains a complete mystery, hidden beneath miles of crushing water where sunlight never penetrates. In this eternal darkness, evolution has taken a path so bizarre that ...

Several millions of years ago, before the existence of modern cities, forests, rivers, and many other things in India, there ...

When researchers announced they'd discovered a giant cave creature with teeth and claws in Australia, you'd be forgiven for picturing something terrifying. Something with fangs. Something enormous.

Researchers found dozens of tiny, see-through crustaceans in an Australian cave, including a new “giant” species measuring nearly 6mm (not pictured). JURE MAKOVEC AFP via Getty Images Beneath a remote ...

Across the American West, officials are racing to contain a wave of invasive and toxic organisms that are literally living in the pipes, canals, and rivers that deliver drinking water. From mussels ...