Relevant open-access article

An article was published today by a group at CU Boulder on the impact of oil and gas activities on VOC (volatile organic compound) concentrations in the Northern Front Range region of Colorado.  VOCs are one of the necessary ingredients in the formation of ground-level ozone, and because some VOCs are carcinogenic, they can also have a direct impact on human health.  This study found that the concentration of certain types of VOCs have increased in this region by a factor of 18-77 due to oil and gas activities, despite tighter emissions standards in 2008.  You can check it out here: 

 http://www.elementascience.org/article/info:doi/10...