We need to clean up our act on roadside pollution | Letters

Guardian readers respond to Michael Gove’s defence of what the government is doing to address air pollutionWe must cut through the smog of rhetoric if we are to have clean air. Through deft political sleight of hand, the environment secretary Michael Gove’s defence of what the government is doing to address air pollution (Letters, 24 May) diverts attention from the cause of dirty air in most of our cities: diesel-fuelled vehicles. This risks slowing down the action required to tackle