Removing carbon from the processes which are essential to our modern world will be one of our generations defining challenges. Broadly speaking the modern world is reliant upon petrochemicals to both provide the fundamental building blocks of modern society (plastics, chemicals) as well as the energy required to power it (coal, gas, petrol diesel). Although a complex portfolio of technologies will be required, Green Ammonia is particularly interesting because of its potential within the Industrial, Energy and Transportation Sectors. In this colloquium we will explore the role of Ammonia in modern society, how it can be synthesised without carbon and ultimately how it can provide a carbon free energy cycle.