Sebastian Luening, paleogeologist: Michel de Rougemont chemical engineer: Without questioning the observed global warming or the emissions to the atmosphere of infrared-absorbing gases, three central issues remain without properly quantified responses, without which no other climate policy than that of a gradual adaptation can be justified: the sensitivity of the climate to human contributions, the disadvantages and the benefits for mankind resulting from a generally warmer climate, and the foreseeable evolution of the climate in consequence of unpredictable changes in human activity.
Sebastian Luening, paleogeologist, Hui Su, Jet Propulsion Lab, USA et al., Andrew Follet: Most global climate models are underestimating increased rainfall caused by global warming. NASA and four universities compared climate data from 1995 to 2005 to 23 climate model simulations for the same period. More than 70 percent of the climate models underestimated the amount of rain compared to the real world observations. “Precipitation is vital to life on Earth and regional precipitation changes accompanying anticipated global warming could exert profound impacts on ecosystems and human society,” reads the study’s abstract.
Rubert Darwall, strategy consultant and policy analyst. He read economics and history at Cambridge University, Judith Curry, former Professor and Chair of the School of Earth and Atmospheric Sciences at the Georgia Institute of Technology: How dependable is climate science? Global warming mitigation policies depend on the credibility and integrity of climate science. In turn, that depends on a deterministic model of the climate system in which it is possible to quantify the role of carbon dioxide (CO2) with a high degree of confidence. This essay explores the contrast between scientists’ expressions of public confidence and private admissions of uncertainty on critical aspects of the science that undergirds the consensus.
Vaclav Havel, , first Prime Minister (1993–1998) and second President of the Czech Republic (2003–2013). The issue of climate alarmism, of man-made and human society endangering global warming has become one of my main topics as well as worries. I strongly disagree with the global warming doctrine which is an arrogant, human freedom and prosperity of mankind endangering set of beliefs, an ideology, if not a religion. It lives independently of the science of climatology. Its disputes are not about temperature, they are part of the “conflict of ideologies”.
Tim Ball, Environmental Consultant, Tom Harris, Executive Director of International Climate Science Coalition, Paul Driessen, Senior Policy Advisor, Committee For A Constructive Tomorrow: The plot to deceive the world about human-caused global warming gathered momentum right after the World Meteorological Organization and United Nations Environment Program (UNEP) created the United Nations Intergovernmental Panel on Climate Change (IPCC) in 1988. “Dr. James E. Hansen of the National Aeronautics and Space Administration told a Congressional committee that it was 99 percent certain that the warming trend was not a natural variation.” More than any other event, that single hearing before the Energy and Natural Resources Committee publicly initiated the climate scare, the biggest deception in history. It created an unholy alliance which was bolstered by the U.N. and the popular press – leading to the hoax being accepted in governments, industry boardrooms, schools and churches all across the world.
Howard Cork Hayden, Emeritus Physics Professor, University of Connecticut: This is a closing argument by Professor Hayden. The debate took place at Colorado State University - Pueblo on December 2, 2017. The other person in the debate was Professor Scott Denning of CSU - Fort Collins. Use search box with Denning to find his presentation.
Howard Hayden, December 19, 2017: What, then, is the basis for saying CO2 causes warming? More CO2 causes more absorption of IR in the far wings of the spectrum, and pretty high in the atmosphere. That absorbed energy rapidly adds heat to the local air, and is generally not radiated back to the surface. The actual atmospheric processes cannot be ignored, and they are not simple as Scott Denning avers.
Cameron Petrie, archaeologist: With climate change in our own era becoming increasingly evident, it’s natural to wonder how our ancestors may have dealt with similar environmental circumstances. New research methods and technologies are able to shed light on climate patterns that took place thousands of years ago, giving us a new perspective on how cultures of the time coped with variable and changing environments. An article in Current Anthropology explores the dynamics of adaptation and resilience in the face of a diverse and varied environmental context, using the case study of South Asia’s Indus Civilization (c.3000-1300 BC).
Dennis Hedke, geophysicist: Are the world's coastal cities destined to be inundated as ice melts at the top and bottom of the planet, causing the oceans to rise? Climate alarmists argue this will be the case if policymakers do not adopt draconian measures to eliminate fossil fuels, especially coal, which produce carbon dioxide emissions that, they allege, cause harmful global warming.