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Nitrogen plays a dual role in the agri-food system: it is an essential nutrient for all life forms, yet also an environmental pollutant causing a range of environmental and human health impacts. 

In this explainer, we explore ways of thinking about nitrogen, the roles both livestock and synthetic nitrogen fertilizer play in the food system, and the current policy targets for reducing nitrogen emissions. 

https://www.doi.org/10.56661/2fa45626

Summary
Introduction
Nitrogen cycle in the agri-food system: new and recycled nitrogen
Quantitative nitrogen flows in the agri-food system
Sources of nitrogen in agriculture: synthetic fertilizers, biological fixation, and recycled nitrogen
Nitrogen in the environment: emissions and impacts
Three approaches for mitigating the impacts of agricultural nitrogen
Nitrogen and sustainable food supply for 10 billion people
Closing words
Acknowledgements
References
Supplementary materials
Glossary
Image
A flyer for the TABLE explainer by Rasmus Einarsson called "Nitrogen in the Food System" with an image of a cutout letter "N" with ferns growing through.
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