There is regular commentary here that seeks to argue that Modern Monetary Theory (MMT) is flawed, bereft or worse because apparently it avoids any discussion of the natural environment. This apparently arises from the inherent conclusion in MMT that growth in aggregate demand (and real GDP) is required to maintain high levels of employment, which are considered both economically and socially desirable. This is the first part of a two-part blog on this topic. We will see that MMT is highly sympathetic to the challenges posed by anthropogenic global warming (a catch-all term) and central policy indications that follow from an understanding of MMT (for example, the superiority of employment buffer stocks) lead to an understanding of how MMT is a green paradigm as opposed to mainstream (neo-liberal) economics and much of Post Keynesian thinking, the latter which relies on generalised expansion as the solution to entrenched unemployment. We conclude that those who seek to dismiss MMT because it doesn’t satisfy their particular pet solution to climate change issues have probably not read some of the earlier MMT literature nor understood fully what is required to develop and disseminate a new way of thinking about the economy. Further, MMT is not a theory about everything! What we will see is that when MMT advocates economic growth it does so with a very different view of what that economic growth might be comprised of and driven.