In its fight against coal emissions pollution, China significantly stepped up its coal-to-natural gas and coal-to-electricity switch to 35 cities last year from 12 cities in 2017, but the next steps to curb stifling pollution levels in cities would be much harder, according to Chinese Environment Minister Li Ganjie. A total of 4.8 million Chinese households made the switch from coal to natural gas and electricity in 2018, up from 4 million households who had switched away from coal in 2017, Reuters quoted Li as saying at a press conference on Monday. …