Weathering and erosion slowly chisel, polish, and buff Earth's rock into ever evolving works ... mountains to sandstone arches in the parched desert to polished cliffs braced against violent ...

An unusual pattern of tiny rock tunnels, first found in Namibia's desert roughly 15 years ago ... If it wasn't for intense weathering and erosion, these holes would have remained hidden from ...

Instead of smooth erosion surfaces ... microorganisms are not uncommon in desert areas as they can obtain their energy and nutrients from the rocks they live in. "What is so exciting about ...