About 80% of all cities have worse air quality than what’s considered healthy — here are the 15 with the worst air pollution.

India, China with he most contaminated cities. The need for bio-fuels will only grow.

Residents on their bicycles and electric bikes wait for the traffic at an intersection amid heavy smog in Shijiazhuang

Residents on their bicycles and electric bikes wait for the traffic at an intersection amid heavy smog in Shijiazhuang

 

Click here for article from BusinessInsider.com: http://www.businessinsider.com/the-cities-with-the-worlds-worst-air-pollution-who-2016-5