The Narusawa Ice Cave is a natural lava tunnel that formed during a violent eruption of Mount Fuji in A.D. 864. Every winter, the cave grows giant ice pillars due to its freezing temperatures.

After crawling into the tunnel for the first time, Heinrich Frank found giant scratch marks all over the walls.

Humans love to decorate, and that's been true for a long time. Early humans have been painting on the walls for tens of ...

A paper reveals a persuasive case that an extinct human ancestor tried to hibernate. The evidence is from nutritional ...

Researchers have discovered a new species of bettong and two new subspecies of woylie from fossils found in Australia's Nullarbor caves.

Imagine living in complete darkness, deep underground, for 17 months—no sunlight, no people, just the echo of your thoughts.

Some of the roughly 5,700-year-old human bones uncovered at El Mirador cave in northern Spain show cannibalism’s tell tale signs: cremation, human tooth marks, or butchery, that was likely processed ...

The prawn is one of two new species recently found in southern China caves during animal surveys, according to the study.

Back in May this year, Musk not only proclaimed the slogan "Making Humanity a Multi-Planetary Species" during his speech but ...

Back in May of this year, Elon Musk not only proclaimed the slogan "Making Humanity a Multi-Planet Species" in his speech but ...

A skull that was found embedded in a cave wall in Greece more than 60 years ago may finally have an identification.

Roborock’s big product announcement at IFA 2025 is something I don’t think anybody saw coming: a combo washer and dryer with ...