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 ...

The Zero Blaster is a new toy that encourages kids to blow smoke rings, but with a gun—not cigarettes. The Zero Blaster includes a light for fun at day or night and can blow the rings up to a distance ...