USA Today has revealed an influential 2006 Republican congressional report that raised questions about the validity of global warming research was partly based on material copied from textbooks, Wikipedia, and the writings of one of the scientists criticized in the report. One analyst determined that 35 of the report’s 91 pages were plagiarized, and often injected with errors, bias and changes of meaning. The report was compiled at the request of global warming denier Republican Congressman Joe Barton of Texas, then the head of the House Energy and Commerce Committee. With the Republicans set to take control of the House, Barton appears in line to become chair of the committee again.