It's safe to say there is no safe level of air pollution.

It's safe to say there is no safe level of air pollution. Aust N Z J Public Health. 2014 Oct;38(5):407-8 Authors: Barnett AG PMID: 25269976 [PubMed - in process]

http://www.ncbi.nlm.nih.gov/pubmed/25269976?dopt=Abstract

Source: Australian and New Zealand Journal of Public Health - October 1, 2014 Category: Global & Universal Authors: Barnett AG Tags: Aust N Z J Public Health Source Type: research

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