Abstract In this chapter, we provide a list of what view as particularly important open problems and research directions. For instance, axiomatic characterisations many ABC rules are missing, the compatibility committee monotonicity proportionality is not known, questions regarding core property remain unanswered.

Abstract As we said in Sect. 10.1007/978-3-030-98640-7_1#Sec1 , it is time to change the way treat planet and all its ecosystems. It some people are abused for sake of lowering cost consumer goods. live, do business, put sustainability on top agenda when making supply chain procurement decisions. The world 2030 should be a cleaner, more equitable place than now. This will case if highly informe...