World News Smog levels in China drop dramatically: MEP data China has progressed in controlling its pollution problem as the average density of PM2.5 particles in its three key economic regions has dropped dramatically in the first half of 2015, officials said. Aman Dwivedi 21 Jul 2015 13:49 IST Updated On 21 Jul 2015 13:51 IST Follow Us New Update NULL Read More Subscribe to our Newsletter! Be the first to get exclusive offers and the latest news Subscribe Now Read the Next Article