Air pollution could be damaging your memory, finds new study

The researchers collected information on air quality for each district, including levels of both nitrogen dioxide (NO2) and particulate matter (PM10), which are particles with a diameter of 10 micrometers or smaller. Both are produced by burning fossil fuels from car and other vehicle exhausts, power plants and industrial emissions. The researchers say that although caution is always needed when interpreting a causal relationship, they describe the results as "concerning," and add that they are consistent with those produced by animal studies, although this is one of the first studies to confirm the results in humans.