Conservatives have their sights set on textbooks in Texas that don’t challenge the theory of evolution. The Dallas Morning News reports that religious conservatives on a review panel dedicated to voting on the textbooks in Texas have criticized books that don’t challenge Charles Darwin.

The review panel is now urging the Texas State Board of education to reject the textbooks unless they add disclaimers on evolution.

“This is a theory,” said one reviewer, Texas A&M University’s Karen Beathard. “At the same time, this is a theory. As an educator, parent and grandparent, I feel very firmly that creation science based on biblical principles should be incorporated into every biology book that is up for adoption.”

Texas has a lot of influence over school textbooks, since it is one of the biggest purchasers in the nation.

The president of the Texas Freedom Network, Kathy Miller, told the Dallas newspaper that “culture warriors” were putting Texas schoolchildren “ at risk of becoming a national laughingstock on science education. What our kids learn in their public schools should be based on mainstream, established science, not the personal views of ideologues, especially those who are grossly unqualified to evaluate a biology textbook in the first place.”

Religious conservatives are also objecting to the coverage of global warming in the books, saying that questions remain about the impact of climate change.