> How did the US get this so wrong for so long? [..] For the next four decades, all studies of the use of tetraethyl lead were conducted by laboratories and scientists funded by the Ethyl Corporation and General Motors

The BBC is British - what about the UK? The rest of Europe? China? Japan? Russia? Australia? Did the entire rest of the world also use leaded petrol? And stopped using it at the same time as the US?