A new UN assessment issues a stark warning: the rapid rise in nitrous oxide (N₂O) emissions is jeopardizing the 1.5°C climate goal, harming the ozone layer, and impacting human health. As the most potent ozone-depleting substance still emitted and 270 times more warming than CO₂, urgent action is needed. However, the assessment also reveals tangible solutions that could cut N₂O emissions by over 40% and prevent up to 20 million premature deaths by 2050, offering a critical pathway towards a healthier planet.