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Carbon capture and Sequestration (CCS) could become an important option to limit carbon dioxide emissions that are now causing global climate change. Interest in CCS has grown in North America, Europe, and Asia over the past 5 years. Selected challenges facing the technology include: developing a policy driver to incentivize deployment; defi ning a fl exible and adaptable regulatory framework; and funding large-scale demonstration projects to resolve technical and integration uncertainties as well as reduce high costs. Addressing these three challenges will help solve a fourth: public acceptability. Debate over the timing of CCS deployment is likely to continue, but it is clear that this climate mitigation option is critical to eventual stabilization of greenhouse gas concentrations in the atmosphere.