Study: More Trees Beneficial For Mega-CIties

Plant a tree for your tomorrow remains good advice.  

A new study looks at the benefits of trees in 10 of the world's mega-cities, including New York, London and Mexico City.  

Researchers found that the trees in those cities save around $500 million a year in energy costs and reduce pollution.

Planting 20 percent more trees would double those benefits, the study says.  

Environmental groups have created an online tool call i-Tree to help people find out where trees could be planted in cities for the greatest benefit.  

The study was published in the journal Ecological Modelling.

Photo: Getty Images


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