BBC: Cities need ‘hedges as well as trees’ for environment

Cities need 'hedges rather than trees' for environment - BBC News

Hedges are often better than trees at soaking up air pollution among tall buildings, research has suggested. A paper in the journal Atmospheric Environment says tall trees are good at absorbing pollution in more open areas. But hedges can trap toxins at exhaust pipe level, so reduce people's direct exposure to harmful pollutants.

 

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