A new study shows breathing polluted air results in a “steep reduction in verbal and math test scores”.
The data is based on roughly 32,000 people over a four-year period in China. Researchers say older men seemed to be especially susceptible to a drop in cognitive abilities.
The world health organization says 9 out of every 10 people on the planet breathe air containing a high level of pollutants.
Africa and Asia are listed as the worst affected regions.