News:Union Environment ministry has said that roadside air purifiers such as WAYU and HEPA filters has failed to curb air pollution in Delhi. Facts: About WAYU: WAYU stands for Wind Augmentation PurifYing Unit.The device has the capacity to purify air in an area of 500 meter square. It has been developed by the CSIR–National Environmental… Continue reading Roadside air purifiers failed to curb pollution in Capital, says Union Environment Ministry Secretary
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