Researchers have a greener way to produce fertilizer for farming. It could not only protect the climate but also increase food security.

A crystallized version of human urine, struvite, could revitalize seagrasses, which provide food, habitat, and shelter in their ecosystems.

Heavy rain events, which happen just a few days each year, have an outsize role in sending nitrogen runoff into waterways, computer modeling indicates.

Mapping the mechanism that lets legumes make their own ammonium fertilizer could help make agriculture more sustainable.

The genome of the hornwort, one of the first plants to colonize land, may offer a way to grow crops more efficiently with less synthetic fertilizer.

Certain fish are super-urinators, meaning that they contribute more nitrogen to the ecosystem. Unfortunately, they're also prize catches.

"Aging" urine can deactivate 99% of antibiotic-resistant genes in bacteria in the urine, research finds. That means the pee could be safe fertilizer.