The Institute for Carbon Management at UCLA has introduced a groundbreaking method named ZeroCAL to revolutionize cement production by significantly reducing carbon dioxide emissions. By utilizing calcium hydroxide as a precursor instead of limestone, ZeroCAL can eliminate up to 98% of CO2 emissions associated with lime and cement production. This innovation, developed by a team led by Gaurav Sant, not only addresses the environmental impact of the traditional cement-manufacturing process but also offers the potential to produce clean hydrogen gas as a fuel source for heating cement kilns. The process involves dissolving limestone in a water-based solution with an industrial acid, separating calcium through nanofiltration, and then using an electrochemical process to create calcium hydroxide. Named ZeroCAL for zero carbon lime, this approach also generates hydrochloric acid, baking soda, oxygen, and hydrogen gas as byproducts. While currently requiring more energy than conventional methods, ongoing research aims to achieve energy efficiency by streamlining operations and maximizing the use of co-products. The collaboration with Ultratech Cement Limited to establish a demonstration plant in India highlights the practical application and scalability of the ZeroCAL solution. Moreover, the potential for utilizing low-carbon lime in steel production showcases the versatility and broader implications of this innovative approach. The research, supported by various organizations including the Chan-Zuckerberg Initiative and Shell, signifies a significant step towards sustainable cement and steel manufacturing. This paradigm-shifting solution underscores UCLA's commitment to advancing environmental sustainability and decarbonizing industrial processes.