Tree (and greenery)-lined streets have up to 60% less diesel particulate matter and 40% less NO2 in the air:

I posted last week about the pros and cons of exercising in polluted air , and touched very briefly on the importance of choosing routes/locations that minimize your exposure. For example, river-side bike paths are great, because pollution drops exponentially as you move away from roadways, and trees can help block the bad air. But it turns out I was underestimating how important trees and other greenery might be in keeping air clear. A new study in the journal Environmental Science & Technology (abstract here ; press release here ) suggests that "judicious placement of grass, climbing ivy and other plants " can reduce street levels of nitrogen dioxide by up to 40 percent, and particulate matter (the really nasty stuff, primarily from diesel engines) by up to 60 percent. That's much higher than previous estimates, which tended to be around 5 percent. The key: the new resea...

Full article: http://sweatscience.runnersworld.com/2012/07/tree-lined-s...

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Study: Tree-lined streets have significantly cl...

I posted last week about the pros and cons of exercising in polluted air , and touched very briefly on the importance of c...

If you haven't seen the film After the Harvest, you should: #GROWforward #foodsecurity To donate:

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treehugger.com 24 Jul '12, 6pm

It is well known that vegetation is good at filtering air indoors (check out the list of the best air-filtering house plan...