If there’s one vape trick that always impresses, it’s the smoke (well, vapor) ring. Not only is it one of the more impressive tricks, but it’s easy to learn and master with little guidance! Struggle ...

Some scientists think we can better understand volcanoes by learning how the gaseous vortexes emerge. By Carolyn Wilke Some volcanoes perform a rather subtle trick: blowing rings of vapor that waft ...

These ghostly hoops have been spotted above volcanic events around the world. But how they form has long been a mystery. Mount Etna—located in Catania, Italy—is one of the rare volcanoes that can blow ...

If there’s one vape trick that always impresses, it’s the smoke (well, vapor) ring. Not only is it one of the more impressive tricks, but it’s easy to learn and master with little guidance! Struggle ...

Some volcanoes perform a rather subtle trick: blowing rings of vapor that waft near their craters. The short-lived rings have been observed occasionally at volcanoes such as Etna in Italy and ...