The red brick and stone, the smoke and soot, and the sounds and smells of Old Shanghai provide sharp relief to the shiny new Pudong financial centre across the river.

BBC: Reliving Shanghai��s 1930s past

They have built an imaging system that uses an infra-red laser to penetrate areas of thick smoke and flames.

BBC: fire fighting

He saw things he recognized but his brain, befuddled with chemicals released by fear, couldn't locate the words to describe them: the twin stacks spewing plumes of dirty white smoke, the abandoned custom's station with a faded red star painted above the door, the line of white-washed bee hives on a slope near a copse of stunted apple trees.

NPR: Excerpt: 'Legends'

But apples contain high levels of an antioxidant flavonoid called quercetin which is also found abundantly in onions, tea and red wine, and may be important in protecting the lungs from the harmful effects of atmospheric pollutants and cigarette smoke.

BBC: Apples 'protect the lungs'