Charlottesville and much of central Virginia were under an extreme heat warning Tuesday, with temperatures predicted to stay ...

In the atmospheric layer above it, about 10 to 30 miles up, is the stratospheric polar vortex, where every winter a sunlight-starved Arctic spins up a mass of cold air that, ultimately, dissipates ...

In November 1965 a Von Karman vortex street occurred at the Ferrybridge 3 coal-fired power station in West Yorkshire, England. There was a group of eight cooling towers, each over 300 feet tall.