Of the 10 cities around the world with the most-polluted air, the World Health Organization says, seven are in China. The WSJ's Diana Jou spotlights AirWaves, a prototype pollution mask that ...

Last month Beijing's air pollution soared past levels considered hazardous by the World Health Organization. Prior to that, the government often played down the pollution in Beijing, insisting it ...

And in keeping with recent IOC advice, Ljungqvist says that face masks for athletes are not ... Ljungqvist issued reassurances on Beijing's air quality to national Olympic committees, coaches ...