In the most polluted city on earth, the smog is so thick that it seems to consume its source. Iron foundries, smelting plants and cement factories loom out of the haze then disappear once more as you drive along Linfen's roads. The outlines of smoke stacks blur in the filthy mist. No sooner are the plumes of carbon and sulphur belched out than the chimneys are swallowed up again.
California being warmed by urbanization, not Global Warming