The scientific evidence on the influence of Greenhouse Gas (GHG) emissions on the global increase in temperatures explains the importance of improving the information we have available on the main sources of these emissions, with a view to reducing them and, ultimately, instance, to mitigate this serious problem. In order to do that, the main objective of the observatory is to provide this information in sectors of daily activity and consumption. The information is linked to different activities is based on an extensive review of studies published in scientific journals and prestigious institutions.