As climate change becomes more widely taught in American classrooms, some politicians are fighting for lessons to include information outside of usual scientific theories. A lawmaker from Connecticut wants to remove climate change from state science lessons. A legislator in Virginia worries that teachers are passing on their opinions, not facts, on global warming to their students. And an Oklahoma state senator wants educators to be able to put forward other differing ideas on climate change without fearing job loss. Such efforts are becoming more and more common. The California-based nonprofit National Center for Science Education says more than 10 such bills have been proposed so far this year. That is more than the organization usually sees in a full year. It says the bills threaten the quality of science education in America.