In 1986, excavators surveying land for a power plant in Romania accidentally unearthed a strange cave. It had been sealed up ...

Ok, let's agree that China's Baigong Pipes are not evidence of extraterrestrial life. But then, what are they? Scientists ...

Earth not only does not support diverse ecosystems, but it also has places that serve as analogs for other celestial worlds in our solar system. Astrobiologist Joshua Sebree of the University of ...

Fluorescent caves deep below America show how alien life could exist on one of Jupiter's moons, say scientists. Get any of our free email newsletters — news headlines, sports, arts & entertainment, ...

There is Movile Cave—it was cut off from the environment three or four million years ago. The air inside is so toxic to us, but there's things living in there. It's an entire ecosystem. The first time ...

Fluorescent caves deep below America show how alien life could exist on one of Jupiter's moons, say scientists. The chemistry in Wind Cave, South Dakota, means that, under an ultraviolet (UV) light, ...