Dr Jonathan Cullen, leads the Resource Efficiency Collective in the Engineering Department, and has a reputation for top-down studies of resource data, brings skills in developing new metrics to reflect both energy and material consequences of materials production. He has led a number of research projects with strong links to industry, including C-THRU: carbon clarity in the global petrochemical supply chain (US$4m, years). He is a Lead Author for the upcoming IPCC AR6 Industry Chapter, an Expert Adviser to the IEA TechnologyRoadmaps and co-authored the popular book Sustainable Materials: with both eyes open, which pioneered the concept of material efficiency for energy-intensive industries.