(1) To assess the nature and requirements of afforestation and BECCS supply chains that achieve global net greenhouse gas removal levels of 1 GtCO2/yr and 10 GtCO2/yr respectively.

(2) To explore the real world feasibility of these 1 GtCO2/yr and 10 GtCO2/yr supply chains, by evaluating their associated wider consequential environmental, technical, economic, policy and societal implications and trade-offs.