One of our country’s leading civics textbooks has this to say about global warming: “Science doesn’t know whether we are experiencing a dangerous level of global warming or how bad the greenhouse effect is, if it exists at all.”  This text is used in high school Advanced Placement classes around the country.  It claims that “the scientific community is divided over the issue.”  PLEASE SIGN a petition demanding that Houghton Mifflin pull these books from classrooms and revise them to give our children unbiased and factual information on global warming.      http://www.fusewashington.org/page/s/HoughtonMifflin