As Delhi's air turns toxic once again, blanketed by winter smog that makes breathing difficult, the city faces a crisis that many major global metropolises have already overcome. Cities like London, ...

Dr Xand Van Tulleken and Raksha Dave investigate the Great Smog of 1952 - the deadliest environmental disaster ever recorded and one of the world's worst peacetime catastrophes. Lasting just over four ...

For five days in December 1952, a thick smog suffocated the British capital causing the death of thousands of Londoners. The health catastrophe lead to a realisation, in Britain and around the world, ...