When winter hits, nations facing big snowstorms face tough conditions. Slippery streets appear overnight. Footpaths grow risky to walk on. Traffic crawls instead of flows. Whole urban areas find it ...

Melting mega-piles of grimy road snow can release weeks worth of salt, oils (and dog poop) in what one scientist called a “triple whammy.” By Hiroko Tabuchi The snow was magical. Then it was covered ...

Picture sea ice in your mind. You probably imagine brilliant white, snow-covered floes floating on the surface of the ocean, home to penguins in the south of the globe or polar bears in the north. But ...