The US military is a significant polluter, with its fuel consumption and greenhouse gas emissions comparable to those of medium-sized countries. The military's carbon footprint is often overlooked in climate change studies due to difficulties in obtaining consistent data from the Pentagon. A new study calculated the military's emissions based on data from the US Defense Logistics Agency, finding that it emitted over 25,000 kilotonnes of carbon dioxide in 2017. The study suggests that reducing the military's carbon footprint is essential for addressing climate change.