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Ada Colau will be part of trio calling on cities to take action against air pollution at meeting of world mayors in Copenhagen
Various groups give mayor Ada Colau two months to announce her executive's policies for reducing emissions during its 2019-2023 term
Restrictions on polluting vehicles are being introduced in and around Barcelona. But what does this actually mean?
Only 33% of people in Catalan capital see cars as good option for getting around, while 90% say fewer cars would improve quality of life