(1929) An emeritus professor of nuclear physics at the University of Bologna and president of the World Federation of Scientists.
His key criticism pertains to the IPCC's climate models, which he claims are "incoherent and invalid from a scientific point of view." Click here for a more detailed and nuanced version of his critique.
Excerpt: "Despite the rigour intrinsic in our field [Fundamental Interactions] we have a lot of problems in making predictions. The extrapolation of our difficulties to a field such as Meteorology and Climatology, which is by far less rigorous than the study of the Fundamental Interactions, brings me to the conclusion that predictions in Meteorology and Climate change must necessarily be taken with great caution. Much greater than our predictions."