Vitousek, P. M. et al. Human alteration of the global nitrogen cycle: sources and consequences. Ecological Applications 7, 737–750 (1997).

At the beginning of the XXᵉ century, two chemists succeeded in fixing nitrogen in the air. Their invention saw the birth of intensive agriculture, gravely disrupting the nitrogen cycle.

Farmers have always interfered with the cycle, because nitrogen availability often limits the fertility of soils. They have boosted production by planting more leguminous crops, like clover.

Scientists at climate talks say major changes to the nitrogen cycle cannot be ignored Date: December 8, 2009 Source: International Geosphere-Biosphere Programme (IGBP) ...

Nitrogen Fixation: Scientists Solve the Mystery of Life-Sustaining Nutrient Cycle Scientists finally fix the locations where nitrogen transformations critical to life on Earth occur By David Biello ...

NASA’s Curiosity rover has detected yet another ingredient for life on Mars: nitrogen that would have been usable by living organisms. Nitrogen is required for all life on Earth, but it has to ...

Fertilizers adjust nitrogen cycle of prairie plants, according to Iowa State University study October 12, 2017 AMES, Iowa – Excess nitrogen gives an advantage to early season plants in Midwestern ...

Animal-like urea cycle in ocean's tiny diatoms enables marine phytoplankton to use carbon and nitrogen from their environment. ScienceDaily . Retrieved June 2, 2025 from www.sciencedaily.com ...

Scientists have long thought most nitrogen in Earth’s ecosystems comes from the air, but new research shows it also is released as rocks weather. This could boost plant growth and help sequester ...