World  |  Environment  |  Science & Technology  |  Health  |  Human Rights  |  Feel Good  |  Regions
Great News Network
Spread the word:

Green plants reduce street pollution 8 times more than previously believed

July 23, 2012

Trees, bushes and other greenery growing in the concrete-and-glass canyons of cities can reduce levels of two of the most worrisome air pollutants by eight times more than previously believed, a new study has found.

Past research suggested that trees and other green plants can improve urban air quality by removing those pollutants from the air. However, the improvement seemed to be small, a reduction of less than 5 percent. The new study sought a better understanding of the effects of green plants in the sometimes stagnant air of city streets, which the authors term "urban street canyons."

The study concluded that judicious placement of grass, climbing ivy and other plants in urban canyons can reduce the concentration at street level of NO2 by as much as 40 percent and PM by 60 percent, much more than previously believed.

Continue reading on E! Science News article opens in new window 
[Broken link?]


Comment on this story

More Great News

 

Recommendations

About

The Great News Network is meant to supplement your daily news sources - not replace it. It's role is to show that there is hope, people are making a difference, and that a lot of things are getting better.

Optimism is a great catalyst for making the world a better place. When we can see there is hope, then we'll be more compelled to make the effort to do our part.

© 2003-2019 GNN