Forgive me, but this letter is again about the Great Dirty Diesel Scare. My previous correspondence on this matter (Letters LTT 13 Oct), cited figure 3.2 from the 2010 COMEAP report, showing that fine particulates (PM2.5) from road traffic amount to a small proportion of the total, namely, in inner London 15%, outer London 11%, and the rest of England 8%.
Well here is the thing. The Greater London Authority’s London Atmospheric Emissions Inventory of 2013 attributes to road traffic...
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