certain negative environmental impacts. 45−47 Overall, decisive action is needed to ensure safe and sufficient N fertilizer supply under turbulent times, and sustainable chemistry and engineering have to play a significant role. This is substantiated by the fact that the population is projected to increase to ∼9.8 billion by 2050, while the N-rich protein diet is also expected to increase as 99% of the population growth from 2020 to 2050 is projected to occur in Asia and Africa, currently on a low-protein diet. 48 We hope that this editorial will stimulate and seed creative thinking in obtaining sustainable synthesis routes of efficient and stable N fertilizers from widely available waste, rather than utilizing natural gas.