Pale rocks on the red planet reveal a watery past and suggest the potential for life. Sometimes, scientists have to dig, work ...

The Week is part of Future US Inc, an international media group and leading digital publisher. Visit our corporate site.

This study systematically classified the lithofacies based on sedimentary textures, mineral composition ... dark-colored laminated lime-dolomite shales, and dark-colored lime-dolomite rocks. These are ...