Overview of CCS technology. Part 1 Geological sequestration: Screening and selection criteria and characterisation technique; CO2 sequestration in deep saline aquifers and formations; CO2 sequestration in oil and gas reservoirs and enhanced oil recovery (EOR); CO2 sequestration in unmineable coal seams and enhanced coal-bed methane recovery (ECBM). Part 2 Maximising and verifying CO2 storage in underground reservoirs: CO2 injection design to maximise storage and EOR; Capillary seals for trapping CO2; Monitoring technologies for verification of CO2 storage; Modeling long-term safety of CO2 storage. Part 3 Terrestrial and ocean sequestration and environmental impacts: Terrestrial sequestration; Ocean sequestration; Risks and impacts of CO2 leakage in terrestrial ecosystems; Risks and impacts of CO2 leakage in marine ecosystems. Part 4 Advanced concepts: Industrial utilisation; Biofixation by micro-organisms; Mineralisation; Photocatalytic reduction.