As he presents his past and especially his education, Al Gore took his college lessons in the 1960 from Dr. Revelle and Dr. Keeling, two renowned Harvard lecturers and researchers. The two were the first scientists to undertake comprehensive measurement of atmospheric Carbon Dioxide and the rate of buildup of the gas, which the two blamed for global warming. As such, Al Gore had detailed knowledge of the negative impacts of carbon dioxide build up in the atmosphere long before the world learned about the problem. Al Gore presents the testimonies of leading scientists and environmentalists in this film, highly authoritative figures in science who make Al Gores claims reliable. Therefore, Al Gore presents the issues related to climate change from a highly authoritative perspective though the film has some inconsistencies that dilute the strong authority that Al gore commands in the environmental field.
Al Gore’s “An Inconvenient Truth” is an awakening call to policy makers to institute measures that would prevent climate change. From the Keeling curves that Al Gore presents in the film, there is enough justification that climate change is real and the situation is worsening with time. As a result, humanity faces a major challenge that may determine their survival or extinction. One aspect that makes the film authoritative and reliable is the Keeling curves that Al Gore heavily relies on in the entire film as proof of climate change over the last 50 years. Today, the curves are predominantly used by environmentalist to study climatic changes with time. Moreover, Al Gore has a deep passion for the problem at hand. As a highly trained environmentalist who learned about the problem of climate change long before most people did, Al Gore’s presentations are deeply emotional and presented professionally considering he is highly trained in environmental science.