In recent years, studies have revealed that the now-arid region of northern Arabia was once much wetter and greener, providing Neolithic human populations with access to both water and game. The present aridity of the region, however, preserves little organic matter, making a reconstruction of the Neolithic lifestyle difficult.
Click here for original story, Analysis of grinding tools reveals plant, pigment and bone processing in Neolithic northern Saudi Arabia
Source: Phys.org