Portland public schools ban textbooks that cast doubt on climate change | Fox News The Portland Public Schools board voted last week to ban any materials that cast doubt on climate change, the Portland Tribune reported. According to the resolution passed May 17, the school district must remove any textbooks and other materials that suggest climate change is not occurring or that says human beings are not responsible for it. “A lot of the text materials are kind of thick with the language of doubt, and obviously the science says otherwise,” said Bill Bigelow, a former Portland public school teacher...