Pruitt rejects the scientific consensus on climate change. During his January 18, 2017, confirmation hearing to be EPA Administrator, he said that "the climate is changing, and human activity contributes to that in some manner". In March 2017, Pruitt said that he does not believe that human activities, specifically carbon dioxide emissions, are a primary contributor to climate change, a view which is in contradiction with the scientific consensus. On June 2, 2017, Pruitt acknowledged that global warming is occurring, and that "human activity contributes to it in some manner." However he added "Measuring with precision, from my perspective, the degree of human contribution is very challenging."