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.

The breakthrough could reveal previously hidden ancient human activity inside caves, acting as ‘genetic archives’ ...

For the first time, scientists have shown that ancient human DNA can survive for thousands of years on cave walls, opening ...

Gold can sometimes be recovered from river sand through careful panning and separation techniques, depending on mineral content and location. This overview explains how natural sediments may contain ...