Trees a 'low-cost' solution to air pollution and biodiversity loss in cities

"Native woods and trees in urban areas, including gardens, provide haven for wildlife, reduce air pollution, surface run-off and flooding. Reversing the declining numbers of native trees and woods in cities would provide numerous benefits at 'relatively little cost', says a report from the Woodland Trust. As well as access to green space, the report, 'Greening the Concrete Jungle', says trees provide a wide range of free ecosystem services including reducing the risk of surface water flooding and improving air quality that could save millions in flood defence and healthcare costs."

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