Two forces of nature merged in a Hawaii volcano when a superheated whirlwind began dancing around a gushing lava fountain, according to the U.S. Geological Survey. The rare sight was recorded Sept. 2 ...

Imagine a mighty volcano casually blowing flawless smoke rings into the sky, as if showing off a party trick on a colossal scale. These mesmerising volcanic vortex rings look just like the ones expert ...