Iceland’s active volcanoes could erupt at any time, so European scientists are closely monitoring them. They want to better understand what happens before, during, and after an eruption.
Theodore von Kármán, a Hungarian-American physicist, was the first to describe the physical processes that create long chains of spiral eddies like the one shown above. Known as von Kármán vortices the patterns can form nearly anywhere that fluid flow is disturbed by an object. Since the atmosphere behaves like a fluid, the wing of an airplane, a bridge, even an island can trigger the distinctive phenomenon.
Amazing Wikipedia facts about the Dead Sea.
How can you tell the two poles apart? Where are the penguins? What about the bears? The Arctic pole is located in the Northern Hemisphere within the deep Arctic Ocean, while the Antarctic pole is smack in the middle of the ice-covered Antarctica. Camille Seaman describes how enterprising people and organisms have found ways to reside around both poles despite the frigid temperatures.
The meteor that rocked the world in February 2013 also left a trail of dust around it. NASA’s Suomi NPP Satellite tracked the plume and showed that it had traveled around the northern hemisphere and back to Chelyabinsk, Russia in 4 days.
With climate change, certain areas of the United States, like the great Plains and Upper Midwest, will be at a greater risk of burning by the end of the 21st-century. Areas like the Mountain West that are prone to burning now will see even more fires than they do today.