Image: Tom Pfeiffer/Volcano Discovery
Sicily's Mount Etna volcano is currently erupting. The series of explosions began on October 26, but on November 11, the mountain did something rare and nifty. Over the course of several hours it blew out dozens of perfect smoke rings, each hundreds of feet in diameter, including the one pictured here.
It's not the first time Etna has done this. Nobody knows exactly how the rings form, but people have been photographing smoke rings coming from Etna since at least 1970. Volcanologist and tour guide Tom Pfeiffer took this picture, as well as several others that you can see at his Volcano Discovery website. He suspects that the smoke rings are formed when eruptions alter the shape of volcanic vents.
Rod McCullom at Undark has a terrific overview of the perpetual “virtual lineup,” where half of all American adults “are enrolled in unregulated facial recognition networks used by state and local law enforcement agencies.”
It sure feels flat, right? (Life Noggin)
Because ladybug hindwings are covered by an opaque outer shell called an elytra, scientists were not sure how the wings’ folding mechanism worked until Kazuya Saito created a clear replacement shell that allowed them to film the process in super slow-motion.
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Yes, yes there is. The ultraportable Twisty Glass Mini boasts all of the simplicity of its forebear, while fitting just a little bit better in your pocket.The Mini is perfect for casual smokers, and anyone who doesn’t have the patience or fine motor skill for rolling papers. This piece keeps the convenient design of its older […]
Learning to code is a perfect way to grow your technical sophistication, and open up a host of new career options. But since most “learn to code” initiatives focus heavily on web development, it can be tough to find good resources for general-purpose computer science outside of a 4-year degree program. To get a broad […]