William Happer, Emeritus Professor of Physics, Steven Koonin, New York University, Center for Urban Science and Progress, Under Secretary for Science at U.S. Depart. of Energy in President Obama's administration, Richard Lindzen Emeritus Professor, MIT Department of Earth, Atmospheric, and Planetary Sciences: This is a tutorial on man-made global warming, man-made climate change for the U.S. District Court, Northern District of California, San Francisco Division. 1) The climate is always changing. 2) Human influences on the climate are a small (1%) perturbation to natural energy flows. 3) It is not possible to tell how much of the modest recent warming can be ascribed to human influences. 4) There have been no detrimental changes observed in the most salient climate variables and today's projections of future changes are highly uncertain.
Don Bogard, radio-geochemistry, nuclear geochemistry, planetary science: Carbon (C) exchange rates among C reservoirs tend to be at equilibrium unless and until a significant environmental change disturbs that. A significant increase in atmospheric (Atmos) CO2 concentration over the past century has been such a disturbance, and as a consequence a large fraction of that growth in Atmos CO2 has manifested as new plant growth and to increased ocean C levels. Increased temperature over the past century (which mostly has only modestly affected the ocean) and any tendency for warmer surface ocean to degas more CO2, has been over-powered by higher Atmos CO2 shifting the chemical equilibrium toward more dissolution of Atmos CO2 into the oceans. Higher decay rates of soil biotic material caused by the increased temperatures may be a source of part of the Atmos CO2 increase over the past century. However, it is most unlikely that organic decay has been other than a minor source, especially in the past few decades when Atmos CO2 was growing most rapidly.
Bonne Posma, physicist, Andrew Kenny, physicist, mechanical engineer: It is interesting to note that previous CO2 alarmist, James Lovelock (originator of the Gaia hypothesis), reversed himself about 10 years ago and now supports increased use of fossil fuels to potentially help mitigate the effects of the next ice age. This action was also proposed in 1900 by the first proponent of CO2-linked global warming, Svante Arrhenius (Nobel Prize in Chemistry 1903).
Llewellyn King, White House Chronicle, John Shanahan, Environmentalists for Nuclear - USA: The debate about man-made global warming must be resolved quickly and one action or the other taken in a matter of decades not longer. The choices are to stop using fossil fuels around the world in a decade or so because of man-made climate change or continue to use fossil fuels and promote nuclear energy to deal with natural climate change and man's need for energy. The choices are radically different. It would be a disaster to make the wrong choice. The Scientific Method must be used to make the right choice.
Llewellyn King, White House Chronicle, John Shanahan and Bruno Comby, Environmentalists for Nuclear, Calvin Beisner, Cornwall Alliance: This is a discussion of possibilities for a program/series on PBS TV to explore the topic of man-made global warming. The idea would be welcomed by the public. Message 1 is from Llewellyn King. Message 2 is a reply from John Shanahan with suggestions for a program or series. Message 3 is an excellent summary of this topic by Bruno Comby. Message 4 has excellent questions by Calvin Beisner. Don't miss the significance and subtitles of the pictures.
Tom Wysmuller, Lecturer at Colderside.com: He documents the disconnect between temperature and CO2 for the last 2000 years. It is amazing how some scientists including former White House Science Advisor, John Holdren, and the National Academy of Sciences of which he is a member claim that there is a direct relationship between atmospheric CO2 concentration and man-made global warming, man-made climate change, man-made climate disruption. The names have changed since 1980 to suit their goals for predicting climate gloom.
Vijay Jayaraj, Research associate, Cornwall Alliance for the Stewardship of Creation: Climate data from the past contradict the alarmist’s claims that carbon dioxide emissions from human activity have been the primary drivers of global temperatures. Data show that the current warming is not unprecedented but was matched by the Roman Warm Period (roughly 250–400) and Medieval Warm Period (roughly 950–1250). The alarmists’ attitude towards climate change will prove more harmful than beneficial in the long run. Insofar as they prevail, we will become more and more unprepared to face any climatic condition that is contrary to their dubious theories of unprecedented warming.
Die kalte Sonne, Fritz Vahrenholt, Chemist, Sebastian Luening, Paleogeologist: Pre-industrial temperatures have undergone marked natural variations at every possible time-scale. Definition of an 1850–1900 “pre-industrial” reference level is therefore simplistic and does not do justice to the significant natural dynamics of the pre-industrial temperature development. Unfortunately, key reports on the climate limits refer to the pre-industrial temperature as if it had been static during past millennia.
Paul Driessen, senior policy analyst for the Committee For A Constructive Tomorrow: Eco-activists will inflict far more damage on environmental values than do the technologies they despise. Their “solutions” to alleged ecological “problems” will turn billions of acres into wind and solar farms, biofuel plantations, hydroelectric projects, and mines for materials needed for wind turbines, solar panels, batteries and other “clean, green, renewable” energy alternatives. We need to muster enough science, intellectual rigor and freedom of speech to prevent more deaths in the name of “environmental justice.
Paul Driessen, senior policy analyst for the Committee For A Constructive Tomorrow: The Intergovernmental Panel on Climate Change and dominant, government-funded climate research have gone from seeking to identify human influences on Earth’s climate … to decreeing that only human influences matter, natural forces no longer play a meaningful role, and humans can control climate and weather by eliminating fossil fuels and regulating atmospheric greenhouse gas levels. Those assertions now have the unwavering support of an entire industry – the $1.5-trillion-per-year Climate Industrial Complex: politicians, regulators, researchers, industrialists and activists, who protect and advance alarmist claims, promote allegedly “renewable” energy, resist examination and reform, and denounce anyone who questions climate chaos orthodoxy as “planet-threatening climate change deniers.”