Heavy fogs have long been a part of life in London ... dangerous mix of fog and smoke—the likes of which they had never experienced, and were not prepared for. When the smog finally lifted ...

That is exactly what happened in July 1943—and then again and again for more than half a century. Without warning, noxious fog ... smog puzzle was its smell, which was different from the sulfurous ...

Claude Monet was enchanted by the mysterious light generated by London's famous "smog", and the city he loved ... that it is harder to paint. "The fog assumes all sorts of colours; there are ...

Fog is white, whereas smog is usually darker and may change depending on specific pollutants. The term "smog" was first coined in the early 20th century in London to describe the low-hanging ...