The article discusses the challenges of decarbonization, focusing on three key topics: carbon abatement, carbon capture and storage (CCS), and developments in the hydrogen front. Despite decades of efforts, global emissions have continued to rise, prompting a reevaluation of current approaches. Papers presented at SPE conferences highlight the importance of addressing energy security and economic disparities in carbon abatement strategies. On the CCS front, the article mentions the challenges faced in storing CO2 in deep saline aquifers and introduces a novel perspective involving the coinjection of CaCl2 to expedite the process. The article also covers advancements in the use of green hydrogen as an energy vector, particularly in underground hydrogen storage (UHS). While UHS offers significant energy storage capacity, it faces competition from utility-scale battery storage in terms of energy efficiency. Technoeconomic challenges in scaling up hydrogen-based energy production are highlighted, with a focus on safety and economic feasibility. Papers like IPTC 23943 and SPE 215489 underscore the progress made by the engineering community in overcoming these challenges. Subodh Gupta, a technology adviser in Calgary, provides insights into decarbonization efforts, discussing the nonworkable, workable, and potentially workable ideas in carbon abatement. His extensive experience in the petroleum industry and research contributions emphasize the importance of innovative solutions in the transition to a low-carbon future.