Menu

Green Cities Reduce Pollution

Trees and bushes growing in the world’s metropolises reduce air pollutants by 8 times more than previously realized.

Aug 30, 2012
Jef Akst

City projects aiming at making neighborhoods more green are doing the world good, according to a new report published in Environmental Science & Technology this week (August 29). Such greenery can reduce levels of nitrogen dioxide (NO2) and microscopic particulate matter (PM), two potentially harmful pollutants, by 8 times more than previously estimated.

NO2 and PM levels often exceed safe levels in cities, explained Thomas Pugh Lancaster University in a press release, but previous work has suggested that trees and other plants remove some of those pollutants, improving air quality for city residents—but the reduction was only by about 5 percent. The new study found that if enough plants are used, in what the researchers term “urban street canyons,” they can lower street level NO2 and PM by as much as 40 and 60 percent, respectively. In addition to just planting trees and shrubs around the city, people could build plant-covered billboards, they suggest.

“Judicious use of vegetation can create an efficient urban pollutant filter, yielding rapid and sustained improvements in street-level air quality in dense urban areas,” the authors wrote.

September 2018

The Muscle Issue

The dynamic tissue reveals its secrets

Marketplace

Sponsored Product Updates

StemExpress LeukopakâNow Available in Frozen Format

StemExpress LeukopakâNow Available in Frozen Format

StemExpress, a Folsom, California based leading supplier of human biospecimens, announces the release of frozen Peripheral Blood Leukopaks. Leukopaks provide an enriched source of peripheral blood mononuclear cells (PBMCs) with low granulocyte and red blood cells that can be used in a variety of downstream cell-based applications.

New Antifade Mounting Media from Vector Laboratories Enhances Immunofluorescence Applications

New Antifade Mounting Media from Vector Laboratories Enhances Immunofluorescence Applications

Vector Laboratories, a leader in the development and manufacture of labeling and detection reagents for biomedical research, introduces VECTASHIELD® Vibrance™ – antifade mounting media that delivers significant improvements to the immunofluorescence workflow.

Best Practices for Sample Preparation and Lipid Extraction from Various Samples

Best Practices for Sample Preparation and Lipid Extraction from Various Samples

Download this white paper from Bertin Technologies to learn how to extract and analyze lipid samples from various models!

Bio-Rad Launches CHT Ceramic Hydroxyapatite XT Media and Nuvia HP-Q Resin for Process Protein Purification

Bio-Rad Launches CHT Ceramic Hydroxyapatite XT Media and Nuvia HP-Q Resin for Process Protein Purification

Bio-Rad Laboratories, Inc. (NYSE: BIO and BIOb), a global leader of life science research and clinical diagnostic products, today announced the launch of two new chromatography media for process protein purification: CHT Ceramic Hydroxyapatite XT Media and Nuvia HP-Q Resin.