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Smoke rings are being seen in a new light. Doughnut-shaped structures called vortex rings are sometimes seen swirling through fluids. Smokers can form them with their mouths, volcanoes can spit them ...

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 ...

Dozens of circular loops made from smoke and volcanic gas are rising from a peculiar vent on Mount Etna every day. When you purchase through links on our site, we may earn an affiliate commission.

A smoke ring formed in the sky after a transformer explosion in Branford on Thursday and the mysterious looking formation is called smoke vortex ring. Smoke vortices form when there is a blast through ...