Since then-President Richard Brodhead signed the American Colleges and University Presidents’ Climate Commitment in 2007, Duke University’s overall greenhouse gas (GHG) emissions have decreased by 38% from their 2007 levels. Overall emissions have been reduced through a combination of the discontinuation of the use of coal on campus, significant increases in building and utility plant efficiency despite campus growth, and commuting reductions. However, compared to 2022, emissions have risen approximately 8%. This increase in emissions was anticipated as Duke resumed new-normal operations post pandemic. The largest driver of this increase is air travel, which grew by nearly 150% compared to the previous year and now is nearly the same as pre-pandemic levels. Energy-related emissions remain on track and decreased 2% from 2022.