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Anti-climate change consensus: Italian scientists say global warming is not man-made

Leading Italian scientists published a letter with nearly 100 signatories refuting the supposed consensus on anthropogenic climate change.

A group of 83 renowned Italian scientists published a letter on January 11 assuring that scientific evidence shows that climate change and global warming exist, but it has no basis in human action, rather that significant temperature changes are natural processes.

In recent decades, it was found that the Earth’s surface has increased by approximately 0.9°C from 1850 to date, and it was hypothesized that this is abnormal and is due to human activities, particularly excessive emissions of CO2 from the use of fossil fuels.

Leading Italian scientists, Anti-climate change consensus: Italian scientists say global warming is  not man-made
This thesis recently received the title of Anthropogenic Global Warming in academia and is actively promoted by the Intergovernmental Panel on Climate Change (PICC) of the United Nations (Photo internet reproduction)

This hypothesis has been dubbed the “scientific consensus” by specialized magazines and popularizers, but as this group of Italian scientists assures, there is far from having a consensus, and there is no concrete evidence to date that has proven this argument.

This thesis recently received the title of Anthropogenic Global Warming in academia and is actively promoted by the Intergovernmental Panel on Climate Change (PICC) of the United Nations, which ensures that environmental changes will generate catastrophes in the near future, making the planet uninhabitable.

This has led nations around the world to create ministries and massive budgets to introduce measures that forcefully reduce greenhouse gas emissions.

These measures have proven to be extremely harsh against economies, and have deepened crises around the world, the most recent cases being in Sri Lanka or the Netherlands.

However, the anthropogenic origin of global warming is an unproven conjecture, deduced only from certain climate models, that is, from complex computer programs that estimate certain patterns of how the Earth’s temperature should evolve, called general circulation models.

There are equally valid models that prove the opposite; that much of the Earth’s temperature rise is explained by natural, not human, phenomena.

To date, there is no evidence that allows choosing one model over the other, say the signing scientists.

“The anthropogenic responsibility for observed climate change in the last century is therefore grossly exaggerated and catastrophic forecasts are unrealistic,” they conclude.


Climate is the most complex system on Earth, so they must be addressed with appropriate methods that suit their level of complexity.

The climate simulation models promoted by the UN do not reproduce the natural variability of the climate and, in particular, do not reconstitute the warm periods of the last 10,000 years, which, according to the signatories, leads to significant errors.

When these parameters are added to the models, the warming is found to have recurred every thousand years.

For example, there is the medieval warm period, around the year 800, when the temperature was 2°C above the average temperature, at a time when there were no industrial processes that released polluting gases.

The same thing also happened during the warm Roman period, between 250 BC and 400 AD, when the temperature rose 0.6°C; the Minoan warm period, between 1,500 and 1,200 years BC, with a climatic anomaly of +1.2ºC.; and the so-called Climatic Holocene, 8,000 years ago.

These past periods were warmer than today, with the CO2 concentration lower than today; and no one denies the climatic phenomena behind him.

However, general circulation models fail to reproduce these cycles, so it is a mistake to use them to take measures with such a strong impact on people’s lives, according to the Italian scientists.

There is a lot of evidence indicating that current global warming is part of a warm cycle like the others, since the temperature anomalies began, in fact, in the 1700s, that is, at the minor point of the Little Ice Age, which is the coldest period in the last 10,000 years, and corresponds to a millennial minimum of solar activity that astrophysicists call the Maunder solar minimum.

Solar activity is also a crucial point that determines Earth’s warm or polar periods.

In fact, the “climate change consensus” models fail to reproduce the well-known climatic oscillations within this warm period that is being experienced.

There was a first sub-period of strong warming (1850-1880) followed by a cooling one (1880-1910), despite the fact that the Industrial Revolution broke out in between and the anthropological effect should have been determinative.

Subsequently, there was another warming sub-period (1910-1940), and another cooling sub-period (1940-70) and a new warming one (1970-2000), which seems to have stabilized, since the following years (2000-2021) did not see the increase predicted by the models, of approximately 0.2°C per decade, but a clear climatic stability interrupted sporadically by the rapid natural oscillations of the equatorial Pacific Ocean, called El Niño Southern Oscillation (ENSO), like the one that caused temporary warming in 2015 and 2016.

Thus, it is scientifically unrealistic to blame man for the observed warming from 1900 to the present, let alone the more general warming since the 1700s.

Alarmist predictions are therefore not credible, since they are based on models whose results are in contradiction with the observed data.


  1. Uberto Crescenti, Emeritus Professor of Applied Geology, Università G. D’Annunzio, Chieti-Pescara, former Rector Magnificent and President of the Italian Geological Society.
  2. Giuliano Panza, professor of seismology at the University of Trieste, academician of Lincei and of the National Academy of Sciences, known as the XL, 2018 International Prize of the American Geophysical Union.
  3. Alberto Prestininzi, Professor of Applied Geology, University of La Sapienza, Rome, former Chief Scientific Editor of the International Journal IJEGE and Director of the Center for Research on Prediction and Control of Geological Hazards.
  4. Franco Prodi, Professor of Atmospheric Physics, University of Ferrara.
  5. Franco Battaglia, professor of physical chemistry, University of Modena; Galileo Movement 2001.
  6. Mario Giaccio, Professor of Technology and Economics of Energy Sources, G. D’Annunzio University, Chieti-Pescara, former Dean of the Faculty of Economics.
  7. Enrico Miccadei, Professor of Geography, Physics and Geomorphology, G. D’Annunzio University, Chieti-Pescara.
  8. Nicola Scafetta, Professor of Atmospheric Physics and Oceanography, Frederico II University of Naples.


  1. Antonino Zichichi, Emeritus Professor of Physics, University of Bologna, founder and president of the Ettore Majorana Center for Scientific Culture in Erice.
  2. Renato Angelo Ricci, emeritus professor of physics at the University of Padua, former president of the Italian Physical Society and the European Physical Society; Galileo Movement 2001.
  3. Aurelio Misiti, Professor of Health-Environmental Engineering, La Sapienza University, Rome.
  4. Antonio Brambati, professor of sedimentology, University of Trieste, director of the PNRA Paleoclima-mare project, former president of the National Oceanography Commission.
  5. Cesare Barbieri, Emeritus Professor of Astronomy, University of Padua.
  6. Sergio Bartalucci, Physicist, President of the Scientific and Technological Association of Ricerca Italiana.
  7. Antonio Bianchini, Professor of Astronomy, University of Padua.
  8. Paolo Bonifazi, former director of the Interplanetary Institute for Space Physics, National Institute of Astrophysics.
  9. Francesca Bozzano, Professor of Applied Geology, Sapienza University of Rome, Director of the CERI Research Center.
  10. Marcello Buccolini, professor of geomorphology, University of G. D’Annunzio, Chieti-Pescara.
  11. Paolo Budetta, professor of applied geology, University of Naples.
  12. Monia Calista, Researcher in Applied Geology, G. D’Annunzio University, Chieti-Pescara.
  13. Giovanni Carboni, Professor of Physics, Tor Vergata University, Rome; Galileo Movement 2001.
  14. Franco Casali, Professor of Physics, University of Bologna and Bologna Academy of Sciences.
  15. Giuliano Ceradelli, engineer and climatologist, ALDAI.
  16. Domenico Corradini, Professor of Historical Geology, University of Modena.
  17. Fulvio Crisciani, Professor of Geophysical Fluid Dynamics, University of Trieste and Institute of Marine Sciences, CNR, Trieste.
  18. Carlo Esposito, Professor of Remote Sensing, La Sapienza University, Rome.
  19. Mario Floris, Professor of Remote Sensing, University of Padua.
  20. Gianni Fochi, chemist, Scuola Normale Superiore of Pisa; science journalist.
  21. Mario Gaeta, professor of volcanology, University of La Sapienza, Rome.
  22. Giuseppe Gambolati, Member of the American Geophysical Union, Professor of Numerical Methods, University of Padua.
  23. Rinaldo Genevois, professor of applied geology, University of Padua.
  24. Carlo Lombardi, Professor of Nuclear Plants, Milan Polytechnic.
  25. Luigi Marino, Geologist, Geological Hazard Prediction and Control Research Center, La Sapienza University, Rome.
  26. Salvatore Martino, Professor of Seismic Microzonation, La Sapienza University, Rome.
  27. Paolo Mazzanti, Professor of Satellite Interferometry, University of La Sapienza, Rome.
  28. Adriano Mazzarella, professor of meteorology and climatology, University of Naples.
  29. Carlo Merli, Professor of Environmental Technologies, La Sapienza University, Rome.
  30. Alberto Mirandola, professor of Applied Energetics and president of the PhDin Energetics from the University of Padua.
  31. Renzo Mosetti, Professor of Oceanography, University of Trieste, former Director of the Department of Oceanography, Istituto OGS, Trieste.
  32. Daniela Novembre, researcher in Geo-mining resources and mineralogical and petrographic applications, G. D’Annunzio University, Chieti-Pescara.
  33. Sergio Ortolani, Professor of Astronomy and Astrophysics, University of Padua.
  34. Antonio Pasculli, Applied Geology Researcher, G. D’Annunzio University, Chieti-Pescara.
  35. Ernesto Pedrocchi, Emeritus Professor of Energy, Milan Polytechnic.
  36. Tommaso Piacentini, Professor of Physical Geography and Geomorphology, G. D’Annunzio University, Chieti-Pescara.
  37. Guido Possa, nuclear engineer, former deputy minister Miur.
  38. Mario Luigi Rainone, professor of applied geology, University of Chieti-Pescara.
  39. Francesca Quercia, geologist, research director, Ispra.
  40. Giancarlo Ruocco, Professor of Structure of Matter, La Sapienza University, Rome.
  41. Sergio Rusi, Professor of Hydrogeology, G. D’Annunzio University, Chieti-Pescara.
  42. Massimo Salleolini, Professor of Applied Hydrogeology and Environmental Hydrology, University of Siena.
  43. Emanuele Scalcione, Head of the Alsia Regional Agrometeorology Service, Basilicata.
  44. Nicola Sciarra, professor of applied geology, G. D’Annunzio University, Chieti-Pescara.
  45. Leonello Serva, geologist, director of geological services of Italy; Galileo Movement 2001.
  46. Luigi Stedile, geologist, Research Center for Control and Control of Geological Hazards, University of La Sapienza, Rome.
  47. Giorgio Trenta, Physicist and Physician, President Emeritus of the Italian Association for Medical Radiation Protection; Galileo Movement 2001.
  48. Gianluca Valenzise, Director of Research, National Institute of Geophysics and Volcanology, Rome.
  49. Corrado Venturini, Professor of Structural Geology, University of Bologna.
  50. Franco Zavatti, astronomy researcher, University of Bologna.
  51. Achille Balduzzi, geologist, Agip-Eni.
  52. Claudio Borri, professor of construction sciences, University of Florence, coordinator of the International Doctorate in Civil Engineering.
  53. Pino Cippitelli, Agip-Eni geologist.
  54. Franco Di Cesare, Executive, Agip-Eni.
  55. Serena Doria, Researcher of Probability and Mathematical Statistics, G. D’Annunzio University, Chieti-Pescara.
  56. Enzo Siviero, Ponti Professor, University of Venice, Rector of the e-Campus University.
  57. Pietro Agostini, Engineer, Association of Scientists and Technology for Italian Research.
  58. Donato Barone, engineer.
  59. Roberto Bonucchi, teacher.
  60. Gianfranco Brignoli, geologist.
  61. Alessandro Chiaudani, PhD in Agriculture, G. D’Annunzio University, Chieti-Pescara.
    Antonio Clemente, Researcher in Urban Planning, G. D’Annunzio University, Chieti-Pescara.
  62. Luigi Fressoia, urban architect, Perugia.
  63. Sabino Gallo, nuclear engineer.
  64. Daniela Giannessi, Principal Investigator, Ipcf-Cnr, Pisa.
  65. Roberto Grassi, engineer, director of G&G, Rome.
  66. Alberto Lagi, Engineer, President of Restoration of Damaged Complex Plants.
  67. Luciano Lepori, researcher at Ipcf-Cnr, Pisa.
  68. Roberto Madrigali, Meteorologist.
  69. Ludovica Manusardi, nuclear physicist and science journalist, Ugis.
  70. Maria Massullo, Technology, Enea-Casaccia, Rome.
  71. Enrico Matteoli, First Investigator, Ipcf-Cnr, Pisa.
  72. Gabriella Mincione, professor of laboratory medicine sciences and techniques, G. D’Annunzio University, Chieti-Pescara.
  73. Massimo Pallotta, First Technologist, National Institute of Nuclear Physics.
  74. Enzo Pennetta, professor of natural sciences and scientific popularizer.
  75. Nunzia Radatti, chemist, Sogin.
  76. Vincenzo Romanello, Nuclear Engineer, Research Center, Rez, Czech Republic.
  77. Alberto Rota, engineer, researcher at Cise and Enel.
  78. Massimo Sepielli, Research Director, Enea, Rome.
  79. Ugo Spezia, Engineer, Industrial Safety Manager, Sogin; Galileo Movement 2001.
  80. Emilio Stefani, professor of phytopathology, University of Modena.
  81. Umberto Tirelli, Visiting Senior Scientist, Istituto Tumori d’Aviano; Galileo Movement 2001.
  82. Roberto Vacca, engineer and science writer.

With information from La Derecha Diario

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