Discover the hidden process driving gold from Earth’s depths to its surface. Learn how sulfur, volcanic activity, and ...

Made from faux Martian and lunar soil, a new sulfur-based compound could also lead to faster construction on Earth.

When you’re in the mine, the sky is covered by gases. Day and night are confused. You feel suspended in time. Sunarto, 41 years old, carries a load of sulfur out of the Kawah Ijen crater.