Spaced Out Trees Reduce Urban Pollution
Monday, July 20, 2009 - 11:35
in Earth & Climate
A new study suggests that we can improve city environments by planting trees down the middle of streets provided they are not too close together. Too many trees planted close together along a central strip, as is common in many major European cities could lead to more vehicle exhaust fumes being trapped in the urban canyon than would occur if there were no trees.