James Masters, CNN:

According to the report, China and India were found to be jointly responsible for over 50% of global deaths attributable to pollution.

It also found that India now rivals China for early deaths from outdoor air pollution with 1.1 million being recorded in 2016.

While the report found that China had made some progress in declining air pollution, it states that Pakistan, Bangladesh and India have experienced the steepest increases in air pollution levels since 2010.