For most organisms on Earth, rocks are objects, not food. But for one oddball microbe, desert limestone seems to have been on ...

31."Recently, a teacher in my elementary school confiscated crystal meth from a young student who thought it was rock candy ...

Scientists recently identified peculiar micro-burrows in marble and limestone formations in Namibia, Oman, and Saudi Arabia, ...

Mysterious tunnels in desert rocks may be the work of unknown microbes, hinting at a hidden world inside marble and limestone ...