Something we have been trying to tell Manchester City Council and Manchester Metropolitan University. But Manchester City Council is speeding up it’s campaign to built on green space, even prime arable land.

THE DIRT

A new research study by Professor Thomas Pugh at Lancaster University and other scientists in the UK has found that adding trees, bushes, innovative systems like green walls, or even ivy or other creeping vines, can cut street-level nitrogen dioxide (NO2) and microscopic particulate matter (PM), two of the worst forms of pollution, by eight times more than previously thought. Many urban streets have high levels of these types of pollution, far exceeding healthy amounts for humans.

According to Science Daily, previous research has said trees and other greenery can only improve urban air quality by around 5 percent. ASLA’s recent animation on the positive impact of urban forests on air pollution used U.S. Environmental Protection Agency and National Park Service-cited results, which pointed to around 10-13 percent improvement in air quality from major increases in urban greenery. 

The new study focused on better understanding the effects of adding greenery in the stagnant corridors of cities, what…

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