Discover more about Indonesia's volcanic alert system and the systems used around the world to help keep people as safe as ...

In East Africa's Afar Depression, scientists have discovered that fresh lava from deep within the Earth's mantle is driving ...

Deep beneath a Mexican mine lies the Cave of Crystals, a breathtaking cavern filled with colossal selenite formations.

I am hiking along the Metacomet Ridge in Greenfield, Massachusetts – a rather steep basaltic structure, modestly less than five hundred feet high and topped by a stately brick tower constructed in ...