These scientists aren't so sure.

A. Alan Moghissi, Ph.D. Physical Chemistry, Technical University of Karlsruhe, Germany
Aksel Wiin-Nielsen, Professor of Geophysical Science, University of Copenhagen, Denmark
Alfred H. Pekarek, Ph.D. Geology, Associate Professor of Geology, St. Cloud State University, USA
Allan M.R. MacRae, B.Sc., M.Eng., P.Eng, Canada
Andreas Prokoph, B.Sc. Geology, Ph.D. Earth Sciences, University Tubingen, Germany
Anthony R. Lupo, Ph.D. Atmospheric Science, Purdue University, USA
Antonino Zichichi, Professor Emeritus of Advanced Physics, University of Bologna, Italy
Arthur B. Robinson, Ph.D. Chemistry, University of California, San Diego, USA
Arthur Rorsch, Ph.D. Professor Emeritus of Molecular Genetics, Leiden University, The Netherlands
Ben Herman, Ph.D. Atmospheric Sciences, University of Arizona, USA
Bob Durrenberger, Retired Climatologist, Former President of the American Association of State Climatologists, USA
Boris Winterhalter, Ph.D. Geology, Helsinki University, Finland
Bruce N. Ames, Ph.D. BioChemistry, California Institute of Technology, USA
Bruno Wiskel, B.Sc. Honours Geology, University of Albert, Canada
Carl Johan Friedrich (Frits) Böttcher, Ph.D. Professor Emeritus of Physical Chemistry, University of Leiden, The Netherlands
Charles Gelman, B.S. Chemistry, M.S. Public Health, University of Michigan, USA
Chauncey Starr, Ph.D. Physics, Rensselaer Polytechnic Institute, USA
Chris de Freitas, Ph.D. Associate Professor of Geography and Environmental Science, University of Auckland, New Zealand
Christiaan Frans van Sumere, Ph.D. Professor Emeritus of Biochemistry, University of Gent, Belgium
Christopher Essex, Ph.D. Applied Mathematics Professor, University of Western Ontario, Canada
Christopher Landsea, Ph.D. Atmospheric Science, Colorado State University, USA
Claude Allegre, Ph.D. Physics, University of Paris, France
Clinton H. Sheehan, Ph.D. Physics, University of Western Ontario, Canada
Craig D. Idso, M.S. Agronomy, Ph.D. Geography, Arizona State University, USA
Daniel B. Botkin, Ph.D. Biology, Rutgers University, USA
David Deming, B.S. Geology, Ph.D. Geophysics, University of Utah, USA
David E. Wojick, B.S. Civil Engineering, Ph.D. Mathematical Logic, University of Pittsburgh, USA
David Evans, B.Sc. Applied Mathematics and Physics, M.S. Statistics, Ph.D. Electrical Engineering, Stanford, USA
David G. Aubrey, B.S. Geological Sciences, Ph.D. Oceanography, University of California at San Diego, USA
David H. Douglass, Ph.D. Physics, MIT, USA
David J. Bellamy, B.Sc. Botany, Ph.D. Ecology, Durham University, UK
David L. Hill, Ph.D. Physics, Princeton University, USA
David Nowell, M.Sc. Meteorology, Royal Meteorological Society, Canada
David R. Legates, Ph.D. Climatology, University of Delaware, USA
Dennis P. Lettenmaier, Ph.D. Professor of Hydrology, University of Washington, USA
Don J. Easterbrook, Ph.D. Geology, University of Washington, USA
Donald G. Baker, Ph.D. Soils, Geology, University of Minnesota, USA
Douglas V. Hoyt, Solar Physicist and Climatologist, Retired, Raytheon, USA
Duncan Wingham, Ph.D. Physics, University of Bath, UK
Eckhard Grimmel, Ph.D. Geography, University of Hamburg, Germany
Edward Wegman, Ph.D. Mathematical Statistics, University of Iowa, USA
Eigil Friis-Christensen, Ph.D. Geophysics, University of Copenhagen, Denmark
Elliot Abrams, M.S. Meteorology, Penn State, USA
Eric S. Posmentier, Adjunct Professor of Earth Sciences, Dartmouth, USA
Fred Goldberg, Ph.D. Mechanical Engineering, Royal Institute of Technology, Sweden
Fred Michel, B.Sc. Geological Sciences, M.Sc. Earth Sciences, Ph.D. Earth Sciences, University of Waterloo, Canada
Fred W. Decker, Ph.D. Professor Emeritus of Atmospheric Sciences, Oregon State University, USA
Frederick Seitz, Ph.D. Physics, Princeton University, USA
Freeman Dyson, Professor Emeritus of Physics, Princeton University, USA
G. Cornelis van Kooten, B.Sc. Geophysics, Ph.D. Agricultural & Resource Economics, Oregon State University, USA
Gabriel T. Csanady, Ph.D. Mechanical Engineering, University of New South Wales, Australia
Garth Paltridge, Ph.D. Professor Emeritus, Institute of Antarctic and Southern Ocean Studies, University of Tasmania, Australia
Gary D. Sharp, Ph.D. Marine Biology, University of California, USA
Gary Novak, M.S. Microbiology, USA
George E. McVehil, B.A. Physics, M.S. Ph.D. Meteorology, AMS Certified Consulting Meteorologist, USA
George H. Taylor, M.S. Meteorology, University of Utah, USA
George Kukla, Micropalentologist, Special Research Scientist of Lamont-Doherty Earth Observatory, Columbia University, USA
George V. Chilingarian, Ph.D. Geology, University of Southern California, USA
George Wilhelm Stroke, Ph.D. Physics, University of Paris, France
Gerd-Rainer Weber, Ph.D. Consulting Meteorologist, Germany
Gerhard Gerlich, Ph.D. Physics, Technical University of Braunschweig, Germany
Gerrit J. van der Lingen, PhD Geology, New Zealand
Gordon E. Swaters, Ph.D. Applied Mathematics and Physical Oceanography, University of British Columbia, Canada
Graham Smith, Associate Professor of Geography, University of Western Ontario, Canada
H. Grant (H.G.) Goodell, Ph.D. Professor Emeritus of Environmental Sciences, University of Virginia, USA
Hans Erren, B.Sc. Geology and Physics, M.Sc. Geophysics, Utrecht University, The Netherlands
Hans Jelbring, Ph.D. Climatology, Stockholm University, Sweden
Harry N.A. Priem, Professor Emeritus of Isotope and Planetary Geology, Utrecht University, The Netherlands
Hendrik Tennekes, Former Director of Research, Royal Netherlands Meteorological Institute, The Netherlands
Henrik Svensmark, Solar System Physics, Danish National Space Center, Denmark
Henry R. Linden, Ph.D. Chemical Engineering, Illinois Institute of Technology, USA
Howard C. Hayden, Ph.D. Professor Emeritus of Physics, University of Connecticut, USA
Hugh W. Ellsaesser, Ph.D. Meteorology, Formerly with Lawrence Livermore National Laboratory, USA
Ian D. Clark, Professor Earth Sciences, University of Ottawa, Canada
Ian Plimer, Professor of Mining Geology, University of Adelaide, Australia
Indur M. Goklany, Ph.D. Electrical Engineering, Indian Institute of Technology, India
J. Scott Armstrong, B.A. Applied Science, B.S. Industrial Engineering, Ph.D. MIT, USA
Jack Barrett, Ph.D. Physical Chemistry, Manchester, UK
James O’Brien, Ph.D. Meteorology, Texas A&M University, USA
Ján Veizer, Professor Emeritus, Department of Earth Sciences, University of Ottawa, Canada
Jay H. Lehr, Ph.D. Groundwater Hydrology, University of Arizona, USA
Jennifer Marohasy, Ph.D. Biology, University of Queensland, Australia
Joel Schwartz, B.S. Chemistry, M.S. Planetary Science, California Institute of Technology, USA
John Brignell, Ph.D. Professor Emeritus, Department of Electronics & Computer Science, University of Southampton, UK
John E. Gaynor, M.S. Meteorology, UCLA, USA
John K. Sutherland, Ph.D. Geology, University of Manchester, UK
John R. Christy, Ph.D. Atmospheric Sciences, University of Illinois, USA
Joseph Conklin, M.S. Meteorology, Rutgers University, USA
Joseph D’Aleo, M.S. Meteorology, University of Wisconsin, USA
Joseph (Joe) P. Sobel, Ph.D. Meteorology, Penn State, USA
Keith D. Hage, Ph.D. Professor Emeritus of Meteorology, University of Alberta, Canada
Keith E. Idso, Ph.D. Botany, Arizona State University, USA
Kelvin Kemm, Ph.D. Nuclear Physics, Natal University, South Africa
Kenneth E.F. Watt, Ph.D. Zoology, University of Chicago, USA
Khabibullo Abdussamatov, Ph.D. Astrophysicist, The University of Leningrad, Russia
Klaus Wyrtki, Ph.D. Oceanography, Physics, Mathematics, University of Kiel, Germany
Lee C. Gerhard, Ph.D. Geology, University of Kansas, USA
Luboš Motl, Ph.D. Theoretical Physics, Rutgers, USA
Madhav Khandekar, Ph.D. Meteorology, Florida State University, USA
Manik Talwani, Ph.D. Physics, Columbia University, USA
Marcel Leroux, Professor Emeritus of Climatology, University of Lyon, France
Mel Goldstein, Ph.D. Meteorology, NYU, USA
Michael Crichton, A.B. Anthropology, M.D. Harvard, USA
Michael D. Griffin, B.S. Physics, M.S. Applied Physics, Ph.D. Aerospace Engineering, University of Maryland, USA
Michael Savage, B.S. Biology, M.S. Anthropology, M.S. Ethnobotany, Ph.D. Nutritional Ethnomedicine, USA
Michael R. Fox, Ph.D. Physical Chemistry, University of Washington, USA
Michel Salomon, M.D. University of Paris, Director, International Centre for Scientific Ecology, France
Neil Frank, Ph.D. Meteorology, Florida State University, USA
Nils-Axel Mörner, Professor Emeritus of Palegeophysics and Geodynamics, Stockholm University, Sweden
Nir J. Shaviv, Ph.D. Astrophysicist, Israel Institute of Technology, Israel
Norman Brown, Professor Emeritus of Chemistry, University of Ulster, UK
Ola M. Johannessen, Professor, Nansen Environmental and Remote Sensing Center, Norway
Olavi Kärner, Ph.D. Senior Research Associate, Atmospheric Sensing Group, Tartu Astrophysical Observatory, Estonia
Oliver W. Frauenfeld, Ph.D. Environmental Sciences, University of Virginia, USA
Paavo Siitam, M.Sc. Agronomist, Canada
Paul Copper, Ph.D. Professor Emeritus of Earth Sciences, Laurentian University, Canada
Paul Driessen, B.A. Geology and Field Ecology, Lawrence University, USA
Paul Reiter, Professor of Medical Entomology, Pasteur Institute, France
Patrick J. Michaels, Ph.D. Ecological Climatology, University of Wisconsin-Madison, USA
Patrick Moore, B.Sc. Forest Biology, Ph.D. Ecology, University of British Columbia, Canada
Peter Stilbs, Ph.D. (TeknD) Physical Chemistry, Lund Institute of Technology, Sweden
Petr Chylek, Ph.D. Physics, University of California, USA
Philip Stott, Professor Emeritus, Department of Biogeography, University of London, UK
Piers Corbyn, B.Sc Physics, M.Sc Astrophysics, Queen Mary College, UK
R. Timothy (Tim) Patterson, Ph.D. Professor of Geology, Carleton University, Canada
Randall Cerveny, Ph.D. Geography, University of Nebraska, USA
Reid A. Bryson, B.A. Geology, Ph.D. Meteorology, University of Chicago, USA
Richard C. Willson, Ph.D. Atmospheric Sciences, University of California Los Angeles, USA
Richard S. Courtney, Ph.D. Geography, The Ohio State University, USA
Richard S. Lindzen, Ph.D. Professor of Meteorology, MIT, USA
Roger A. Pielke (Sr.), Ph.D. Meteorology, Penn State, USA
Rob Scagel, M.Sc., Forest Microclimate Specialist, Canada
Robin Vaughan, Ph.D. Physics, Nottingham University, UK
Robert C. Balling Jr., Ph.D. Professor of Climatology, Arizona State University, USA
Robert C. Whitten, Physicist, Retired Research Scientist, NASA, USA
Robert E. Davis, Ph.D. Climatology, University of Delaware, USA
Robert Giegengack, Ph.D. Geology, Yale, USA
Robert H. Essenhigh, M.S. Natural Sciences, Ph.D. Chemical Engineering, University of Sheffield, UK
Robert L. Kovach, Professor of Geophysics, Stanford University, USA
Robert (Bob) M. Carter, B.Sc. Geology, Ph.D. Paleontology, University of Cambridge, Australia
Roy Spencer, Ph.D. Meteorology, University of Wisconsin, USA
S. Fred Singer, Ph.D. Physics, Princeton University, USA
Sallie Baliunas, Ph.D. Astrophysics, Harvard, USA
Sherwood B. Idso, Ph.D. Soil Science, University of Minnesota, USA
Simon C. Brassell, B.Sc. Chemistry & Geology, Ph.D. Organic Geochemistry, University of Bristol, UK
Sonja Boehmer-Christiansen, Ph.D. Department of Geography, University of Hull, UK
Steve Milloy, B.A. Natural Sciences, M.S. Health Sciences, Johns Hopkins University, USA
Stephen McIntyre, B.Sc. Mathematics, University of Toronto, Canada
Sylvan H. Wittwer, Ph.D. Horticulture, University of Missouri, USA
Syun-Ichi Akasofu, Ph.D. Geophysics, University of Alaska, USA
Tad S. Murty, Ph.D. Oceanography and Meteorology, University of Chicago, USA
Thomas Schmidlin, Ph.D. Professor of Geography, Kent State University, USA
Timothy (Tim) F. Ball, Ph.D. Geography, Historical Climatology, University of London, UK
Tom Harris, B. Eng. M. Eng. Mechanical Engineering (thermo-fluids), Canada
Tom V. Segalstad, B.S. Geology, University of Oslo, Norway
Vern Harnapp, Ph.D. Professor Emeritus of Geography, University of Akron, USA
Vincent Gray, Ph.D. Physical Chemistry, Cambridge University, UK
W. Dennis Clark, Ph.D. Botany, Sacramento State College, USA
Wm. Robert Johnston, B.A. Astronomy, M.S. Physics, University of Texas, USA
Wibjorn Karlen, Ph.D. Professor Emeritus of Physical Geography and Quaternary Geology, Stockholm University, Sweden
William B. Hubbard, Ph.D. Professor of Planetary Atmospheres, University of Arizona, USA
William Cotton, M.S. Atmospheric Science, Ph.D. Meteorology, Pennsylvania State University, USA
William E. Reifsnyder, B.S. Meteorology, M.S. Ph.D. Forestry, Yale, USA
William J.R. Alexander, Professor Emeritus, Department of Civil and Biosystems Engineering, University of Pretoria, South Africa
William (Bill) M. Gray, M.S. Meteorology, Ph.D. Geophysical Sciences, University of Chicago, USA
Willie Soon, Ph.D. Astrophysics, Harvard-Smithsonian Center for Astrophysics, USA
Wolfgang Thüne, Ph.D. Geography, University of Wuerzburg, Germany
Zbigniew Jaworowski, M.D. Ph.D. D.Sc., Central Laboratory for Radiological Protection, Poland

Meteorologists:
A.J. Colby, B.S. Atmospheric Sciences, AMS Certified, Meteorologist WKYC-TV, USA
Andre Bernier, B.S. Meteorology, Lyndon State College, Meteorologist WJW-TV, USA
Anthony Watts, AMS Certified, Chief Meteorologist KPAY-AM, USA
Arlo Gambell, AMS Certified, Meteorologist, USA
Art Horn, B.S. Meteorology, Lyndon State College, Meteorologist WVIT-TV, USA
Asmunn Moene, former Chief Meteorologist, Oslo, Norway
Austin W. Hogan, AMS Certified, Meteorologist, USA
Bill Meck, Chief Meteorologist WLEX-TV, USA
Bill Steffen, Meteorologist WOOD-TV, USA
Bob Breck, B.S. Meteorology & Oceanography, University of Michigan, Chief Meteorologist WVUE-TV, USA
Brad Sussman, Meteorologist, USA
Brian Sussman, Meteorologist, USA
Bruce Boe, Director of Meteorology Weather Modification Inc., USA
Bruce Schwoegler, B.S. Meteorology, University of Wisconsin-Madison, USA
Christopher Plonka, Meteorologist USAF, USA
Craig James, B.S. Meteorology, Penn State University, Chief Meteorologist WOOD-TV, USA
Dan Maly, Retired Meteorologist WOIO-TV, USA
David Aldrich, B.S. Meteorology, North Carolina State University, Meteorologist WTXF-TV, USA
Dick Goddard, Chief Meteorologist WJW-TV, USA
Don Webster, Retired Meteorologist WEWS-TV, USA
Douglas Leahey, Meteorologist, Canada
Eugenio Hackbart, Chief Meteorologist MetSul Meteorologia Weather Center, Brazil
Grant Dade, Meteorologist KLTV, USA
Herb Stevens, Meteorologist WNYT-TV, USA
James Spann, AMS Certified, Chief Meteorologist WCFT-TV, WJSU-TV, USA
Jason Russell, Meteorologist, WTEN-TV, USA
Joe Bastardi, B.S. Meteorology, Penn State, Expert Senior Forecaster AccuWeather, USA
John Coleman, Meteorologist, Founder of 'The Weather Channel', Chief Meteorologist KUSI-TV, USA
Jon Loufman, Meteorologist WOIO-TV, USA
Justin Berk, B.S. Meteorology, Cornell University, AMS Certified, Meteorologist WMAR-TV, USA
Karl Bohnak, B.S. Meteorology, University of Wisconsin, AMS Certified, Meteorologist WLUC-TV, USA
Kevin Lemanowicz, B.S. Meteorology, Cornell University, Chief Meteorologist WFXT-TV, USA
Kevin Williams, B.S. Meteorology, Cornell University, Chief Meteorologist WHEC-TV, USA
Lee Eddington, Meteorologist Geophysics Branch, U.S. Naval Air Warfare Center Weapons Division, USA
Mark Koontz, Meteorologist WFMJ-TV, USA
Mark Breen, B.S. Meteorology, Lyndon State College, Senior Meteorologist Fairbanks Museum and Planetarium, USA
Mark Johnson, AMS Certified, Chief Meteorologist, WEWS-TV, USA
Mark Scirto, B.S. Meteorology, University of St. Thomas, AMS Certified, Chief Meteorologist KLTV, USA
Morgan Palmer, AMS Certified, Meteorologist KLTV, USA
Nick Morganelli, Free-Lance Meteorologist, USA
Randy Mann, AMS Certified, Meteorologist KREM-TV, USA
Richard (Rich) Apuzzo, Chief Meteorologist Skyeye Weather, USA
Roy Leep, B.S. Meteorology, Florida State University, Meteorologist WTVT-TV, USA
Sally Bernier, B.S. Meteorology, Lyndon State College, Meteorologist WJW-TV, USA
Shane Hollett, Meteorologist WMJI-FM, USA
Steven Nogueira, NWS Senior Meteorologist, USA
Terry Eliasen, B.S. Meteorology, University of Massachusetts Lowell, Meteorologist WBZ-TV, USA
Thomas B. Gray, M.S. Meteorology, USA
Tim Kelley, B.S. Meteorology, Lyndon State College, Meteorologist NECN, USA
Tom Chisholm, B.S. Atmospheric Sciences, Lyndon State College, Chief Meteorologist WMTW-TV, USA
William Kininmonth, M.Sc, Colorado State University, Retired Head of Australian Bureau of Meteorology, Australia