The Beijing Bounce

It's started:

Beijing residents are becoming increasingly vocal about their demands to keep emergency measures introduced for the Olympic Games.

These measures, which run until 20 September, include keeping drivers off the roads, closing polluting factories and shutting down rubbish dumps.

The result has been a less polluted city with blue skies and clearer roads.

More than 400,000 residents have joined online discussion groups to talk about retaining the measures, reports say.