Guardian: Boris Johnson’s decision to suspend the next phase of the low emission zone (LEZ) could leave more than 100,000 Londoners at risk of breathing in dangerously high levels of pollution, it was claimed today. Simon Birkett, from the Campaign for Clean Air in London, warned that the mayor’s decision could also undermine the UK government’s efforts to secure an extension on EU air quality standards. Birkett told the London assembly’s environment committee that the mayor had yet to …