Effectiveness of Green Infrastructure for Improvement of Air Quality in Urban Street Canyons, Thomas A. M. Pugh, A. Robert MacKenzie, J. Duncan Whyatt, and C. Nicholas Hewitt

The creation of “green walls” in urban areas could cut pollution by up to 30%, scientists have suggested.

UK researchers say more trees and other vegetation at street level would clean air in areas that are normally exposed to higher pollution levels.

Plants in towns and cities have been shown to remove nitrogen dioxide (NO2) and particulate matter (PM), both of which are harmful to human health.

The findings appeared in the journal Environmental Science and Technology.

The whole study can be found hereĀ