Air pollution made Beijing unbearable. Britain should watch and learn | Tania Branigan

I lived in the Chinese capital for five years and the smog made my life hell. Of course it’s better here – but we must never be complacentOn a good morning, from my Beijing tower block, I could gaze across the city to the hills far to the west. On the worst days, when pollution levels soared off the scale, I could barely make out the buildings across the road. The air purifiers in each room were turned up to 11. The filters inside were supposed to last for six months – but afte