A discovery in the deserts of Namibia, Oman, and Saudi Arabia has opened new doors in the world of geomicrobiology.

On the contrary—while weathering or abiotic chemical processes can create ... “we suggest that they are of biological origin.” Whatever microbes carved out the tunnels have been long dead, though ...

Freeze-thaw weathering occurs when rocks are porous (contain holes) or permeable (allow water to pass through). Water enters cracks in the rock. When temperatures drop, the water freezes and ...

Exposed rocks along the coastline can be broken down by the processes of weathering. Freeze-thaw weathering occurs when rocks are porous (contain holes) or permeable (allow water to pass through).