Durkin argues that the climate change hypothesis is absolutely wrong. He explains how carbon dioxide emissions from conventional fossil fuel use do not affect temperature rise or climate, and believes that the earth is always cooling and warming with or without our human influence. Earth's climate change is seen as a natural event. There were periods much warmer than today, known as the Medieval Warm Period and the Holocene Maximum during the Early Middle Ages. There were also cold periods known as the Ice Age (the Pleistocene Epoch). He believes that the theory of climate change is wrong because during the period of mass production and growth of industrialization, the temperature decreased. This has called into question the previous theory of pro-climate change scientists that the more carbon dioxide emissions released into the atmosphere, the higher the temperature would rise. During the post-war economic boom, a large amount of carbon dioxide was released into the atmosphere, but temperatures actually dropped during this period. Another reason he believes the climate change theory is wrong is that Martin has demonstrated scientific evidence that a small portion of carbon dioxide is present in the atmosphere. Martin states that the concentration of carbon dioxide in