John Shanahan is a civil engineer and past president of Go Nuclear, Inc. and Environmentalists for Nuclear - USA: There is a titanic struggle over the topic of man-made global warming and man-made sea level rise. The struggle exists on five levels: a) among scientists who have a good knowledge of physics and chemistry related to carbon dioxide from fossil fuels and its role in the entire subject of atmospheric, ocean and land sciences, b) among politicians, c) among people who are determined to save the world from fossil fuels and man-made carbon dioxide, no matter the effects on humanity, d) among other scientists and engineers who claim to have the answers, d) among the public who have very little to no knowledge of atmospheric science, but nevertheless are sure they know the correct answers. A second important topic relates to advocates for nuclear energy who claim to have the answers. If they are wrong about man-made global warming, how can they be trusted with information about nuclear energy. The absolute truth will only come from nature in time. The question is, "How many big mistakes will humans make on this topic before the truth is fully known?