A new international standard for net zero energy and net zero greenhouse gas emissions. In January, ISO released a new guidance document, ISO PAS 50010: 2023, which provides specific recommendations on how an organization can set and meet net-zero energy and emissions targets that increase efficiency every year. “It distinguishes between several different ranges and thresholds for … different net zero goals and their targets, which are increasingly effective in reducing energy and greenhouse gas emissions and therefore more difficult to achieve.” He recommends that the organization develop a multi-year plan to move from more modest net zero targets to more ambitious targets in the following years, which will result in continuously decreasing greenhouse gas emissions. (Dr. David B. Goldstein)