America's huge success in cutting smog at risk of being eroded, experts warn

The Guardian ------- America’s leading cities have some of the cleanest urban air in the world but huge advances made in reducing smog are in danger of falling backwards, experts are warning. New Yorkers breathe air that is 800 times less polluted than Delhi’s and twice as clean as in London and Berlin, the World Health Organization reported. Nine out of 10 people around the world are breathing in high levels of pollutants. This amounts to a sprawling health crisis that causes about 7 million deaths a year, according to the latest global data from the WHO, which warned that air pollution inequality between the world’s rich and poor is widening. To learn more click on the picture below to read the article.