In the arid deserts of Namibia, Oman, and Saudi Arabia, researchers have uncovered an astonishing discovery: thin, orderly ...

For most organisms on Earth, rocks are objects, not food.But for one oddball microbe, desert limestone seems to have been on the menu. Whether or not this mysterious form of life still exists or ...

For most organisms on Earth, rocks are objects, not food.But for one oddball microbe, desert limestone seems to have been on the menu. Whether or not this mysterious form of life still exists or ...