The unknown microorganisms likely used marble and limestone found in Namibia, Oman, and Saudi Arabia as a habitat.

Bhedaghat's Marble Rocks are a striking natural wonder, with 100-foot-tall cliffs lining the Narmada River. Located about 25 ...

After roughly shaping a chunk of flint with a file, the marble-maker placed the piece on a basin of abrasive rock and hemmed it beneath a small waterfall in a creek. After weeks of turning ...