The California Nitrogen Assessment: Challenges and Solutions for People, Agriculture, and the Environment

Nitrogen is indispensable to all life on Earth. However, humans now dominate the nitrogen cycle, and nitrogen emissions from human activity have real costs: water and air pollution, climate change, and detrimental effects on human health, biodiversity, and natural habitats. Too little nitrogen limits ecosystem processes, while too much nitrogen transforms ecosystems profoundly.

The California Nitrogen Assessment is the first comprehensive account of nitrogen flows, practices, and policies f...