An ancient Martian system of canyons and valleys could be home to archaic life forms, a ground-breaking scientific paper has found. Scientists investigating the Red Planet’s mind-boggling cave system ...

Tucked deep inside the winding, limestone labyrinth of Mammoth Cave, scientists just uncovered something unexpected: a shark. Not a living one, thankfully—unless you’re into waking nightmares—but the ...

For the first time, scientists have shown that ancient human DNA can survive for thousands of years on cave walls, opening new ways to study prehistoric human activity. This interdisciplinary study ...

An international team of cave explorers has shown that cave walls and the prehistoric rock art that adorns them can preserve human DNA for thousands of years. Using sterilized scalpels and two layers ...