Beijing skies turn orange as sandstorm and pollution send readings off the scale

Capital of China suffers 'hazardous' levels of air pollution with authorities issuing second-highest safety alertA massive sandstorm has combined with already high air pollution to turn the skies in Beijing an eerie orange, and send some air quality measurements off the charts.Air quality indexes recorded a "hazardous" 999 rating on Monday as commuters travelled to work through the thick, dark air across China's capital and further west. Continue reading...