We must indeed bear in mind that governments are the key players in this context: they are the only institutions that can levy taxes on carbon emissions, introduce regulations to curb their amount and provide incentives to green investments. Yet, finance can also go a long way in helping and reinforcing this process, channelling resources towards sustainable investments.
Therefore, there are still plenty of critical issues concerning the science and art of central banking that need to be addressed, and Alan himself provides answers to most of them.