evidence: Environmental Protection Agency Administrator Scott Pruitt said Thursday he does not believe carbon dioxide is a primary contributor to global warming. [...] The statement contradicts the public stance of the agency Pruitt leads. The EPA's webpage on the causes of climate change states, "Carbon dioxide is the primary greenhouse gas that is contributing to recent climate change." [...] Asked whether he would seek to roll back the EPA's 2009 determination that carbon dioxide and five other greenhouse gases are a danger to public health, Pruitt suggested he would like to see Congress take up the issue.