World cannot return to 'business as usual' after Covid-19, say mayors

City leaders publish ‘statement of principles’ putting climate action at centre of recovery plans Coronavirus – latest updatesSee all our coronavirus coverageMayors from many of the world’s leading cities have warned there can be no return to “business as usual” in the aftermath of the coronavirus crisis if humanity is to escape catastrophic climate breakdown.City leaders representing more than 750 million people have published a “statement of principles