Nevertheless, agreeingwith Colwill et al.
(2012), resource depletion is not the only one problem to be faced, since
CO2 from fossil fuel combustion should be taken into consideration, too. It
represents, indeed, a major contributor to global warming (GW) and
could have potentially devastating social, economic and environmental
consequences in the future, if not addressed (Colwill et al., 2012)