The topic of catastrophic man-made climate change has been around for decades. In the 1970s, John Holdren introduced the idea of a new ice age caused by human activity. Since the 1980s, he has talked about catastrophic man-made global warming caused by CO2 from use of fossil fuels. In 2015, he issued a "Climate Change Compendium" that is posted on this website. Use the SEARCH Box with keyword "HOLDREN." This response to Holdren's 2015 presentation is by Dr. Donald Rapp, a highly educated and experienced scientist. Rapp is open to the possibility of some local and global warming from use of fossil fuels and mankind's activities. He provides detailed comments to Holdren's predictions of catastrophic man-made global warming. Many scientists agree with Dr. Rapp.
