Second, the key to achieving the "30-60" Decarbonization Goal lies in addressing the negative externalities of carbon emissions and cutting the green premium. 1/5  BIS - Central bankers' speeches  To achieve the "30-60" Decarbonization Goal, an array of tasks must be fulfilled.
In a nutshell, we must try to reduce carbon emissions, and to this end there are two challenges to be overcome: One is to gradually reduce the negative externalities of carbon emissions. Carbon emissions increase the greenhouse effect, which brings costs to the society, but carbonemitting companies and users do not pay due costs for their emissions.