Looks like limestone’s on the menu for some unknown microbe.

In some of the driest parts of southern Africa, rock faces hold quiet records of much older worlds. Marble and limestone ...

Paleontologists, to date, have found many marvels that reflect the strength of extinct animals. In the 2000s, one of these marvels in Brazil started getting a lot of attention, stated Discover ...

Scientists are puzzled by ancient microbial activity found in rock formations in Africa and Arabia, hinting at a different environmental past.