Dennis T. Avery documented the long, natural Dansgaard-Oeschger cycle with co-author S. Fred Singer in Unstoppable Global Warming Every 1,500 Years. 2007. His forthcoming book details why most ancient cultures collapsed in “little ice ages.” He has degrees from Michigan State and Wisconsin.
Nine years ago, President Obama’s Environmental Protection Agency issued an “Endangerment Finding,” claiming man-made global warming posed an imminent threat ...