For most organisms on Earth, rocks are objects, not food. But for one oddball microbe, desert limestone seems to have ... The chemical composition of rock samples from inside the burrows showed ...

Unusually small burrows, i.e., tiny tubes that run through the rock in a parallel arrangement from top to bottom, were discovered in marble and limestone of these desert regions. The paper is ...

Unusually small burrows, i.e., tiny tubes that run through the rock in a parallel arrangement from top to bottom, were discovered in marble and limestone of these desert regions. In the desert ...