“This citation database provides bibliographic information, abstracts, and links to many of the vetted scientific papers housed in the PSE Healthy Energy Library, as well as other peer-reviewed journal articles. This database is a near exhaustive and evolving list of the peer-reviewed literature that directly pertains to shale and tight gas development. This literature is organized into twelve different categories, including air quality, water quality, climate, public health, and regulations. PSE Healthy Energy does not necessarily support the methods and the findings of the studies included in this database.”