Scienze del clima e metodo scientifico tra comunicazione della scienza e sociologia della conoscenza

Climate sciences are not yet able to establish actual increase in globally averaged temperatures with certainty, especially in relation to human activities. Although the majority of scientific community agrees that a phase of climatic instability is undoubtedly underway and we can talk about a current “Climate Change”, scientific and socio-political debates are still focused on the scientific relevance of the “Anthropogenic Global Warming” (anthropogenic greenhouse effect). The so-called “crucial proof” is still lacking. Starting from an analysis of several official reports, institutional sources and public discussions of last months, the paper examines the development of climate sciences through historiographical and epistemological categories of Sociology of Knowledge and Science Communication. Considering the complex relationships between science, technology and society, the definition of “scientific community” could be replaced by that of “scientific field”. Experimental data are only one of different tools used by scientific enterprise, indeed it should be taken into account others external factors, not necessarily related to laboratory activity and fieldwork, such as: negotiates, personal satisfaction, institutions, policy making, economy etc. Climatology is a case in point. Finally, the article analyses some interesting observations coming from cognitive approaches (cognitive theory of science), according to which science could be defined as an evolutionary and cultural phenomenon related to contingency (historical context).