Shanghai prepares for clean air

Authorities say PM2.5 remains a big problem as it outlines 100 billion yuan action plan

Shanghai plans to invest 100 billion yuan ($16 billion) in its environmental protection drive for the coming three years, while reducing the concentration of PM2.5 by at least 20 percent from the level in 2013.

Those are part of the targets the municipal government outlined in an action plan for the period between 2015 and 2017.