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 ...

Mount Etna, Europe’s largest active volcano, is delighting tourists and locals by blowing almost perfect circles of smoke into the blue skies over Sicily. The smoke circles, known as volcanic vortex ...

Tourists in Italy have been treated to quite the show as Mount Etna, the largest active volcano in Europe, has been blowing spectacular "smoke rings" into the sky since last week. The rare phenomenon, ...

Mount Etna in Sicily has been blowing spectacular ‘smoke rings’ into the sky since Wednesday. The volcano, which towers over the historic port city of Catania, is the largest in Europe and one of the ...

Mount Etna in Sicily, Italy has been drawing attention over the last week as what appear to be “volcanic smoke rings” rise over the island volcano. Locals have reported seeing these rings since April ...

Bubble ring created by a humpback whale named Thorn. Credit: © Dan Knaub, The Whale Video Company. June 5, 2025, Mountain View, CA -- A team of scientists from the ...

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 ...

A complex maze of lasers, lenses and mirrors has been used to twist light into a vortex shaped like a doughnut. Vortex rings are common in fluids – think of smoke rings floating in air or underwater ...

Tourists in Italy have been treated to quite the show as Mount Etna, the largest active volcano in Europe, has been blowing spectacular “smoke rings” into the sky since last week. The rare phenomenon, ...

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 ...