One African country is home to the deepest gold mine in the world with staggering depths and intense temperatures.

Ruff’s work to understand dark oxygen has implications far beyond Earth’s deepest mines. Moab Khotsong’s ancient, hidden ecosystem exists at high temperatures, pressures, and salinity ...

Scientists have identified a new species of microscopic worms living in the ground below South African mines, isolated from fracture water gushing up from miles below the Earth's surface. It is the ...