Costa Rica's Alajuela Province is home to the deadly 'Cave of Death,' where carbon dioxide continuously seeps, creating an ...

Finding the new millipede in the aphotic zones of both caves suggests it is “specialized to the cave environment,” according to researchers. Thousands of new species are found each year.

A new zombie pathogen has been discovered in Ireland. This insidious fungus infects cave spiders and alters their behavior to ...

The latest fossil, though, was better preserved in the cave environment, scientists say. Previous excavations at the same cave site have revealed dozens of human fossils dating to 300,000 years ...