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Air pollution and visitation at U.S. national parks
Hundreds of millions of visitors travel to U.S. national parks every year to visit America’s iconic landscapes. Concerns about air quality in these areas have led to strict, yet controversial pollution control policies. We document pollution trends in U.S. national parks and estimate the relationshi...
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| Vydáno v: | Sci Adv |
|---|---|
| Hlavní autoři: | , , |
| Médium: | Artigo |
| Jazyk: | Inglês |
| Vydáno: |
American Association for the Advancement of Science
2018
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| Témata: | |
| On-line přístup: | https://ncbi.nlm.nih.gov/pmc/articles/PMC6051738/ https://ncbi.nlm.nih.gov/pubmed/30035225 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1126/sciadv.aat1613 |
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