This week, Alabama made headlines for revising its state science education standards. For the first time, teachers in the state will be required to teach evolution and the fact that humans contribute to climate change. But buried in that news was acknowledgement of a “sticker” that the state requires be placed on its biology textbooks, telling students that evolution is a “controversial theory,” not a fact.

That sticker is actually a one-page insert placed in the front or back cover of every biology textbook a child reads in public schools in the state, according to Steve Ricks of the Alabama State Department of Education. “It encourages students to question the theory [of evolution] and ask questions about it.” The insert was advocated for by conservative Christians, according to the Associated Press.

Below is a copy of the insert, which has appeared in Alabama textbooks since 2005, according to Ricks. It reminds students that “no one was present when life first appeared on earth. Therefore, any statement about life’s origins should be considered as theory, not fact.” It also suggests students “keep an open mind,” and remember that “[t]here are many unanswered questions about the origin of life not mentioned in your […]