Since the mid-1900s, humans have been exerting an ever-increasing impact on the global nitrogen cycle. Human activities, such as making fertilizers and burning fossil fuels, have significantly ...

Despite its critical role on Earth, our understanding of the global nitrogen cycle is far behind our understanding of the more-publicized global carbon cycle. “Large intact forests have the capacity ...

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.

Inorganic N is then taken up by the roots of the next growing crop in the rotation. The cycle repeats when this crop is harvested (Figure 1). This description is an over-simplified example of the N ...

Researchers Explain Nitrogen Paradox In Forests, Illuminating How Ecosystems Respond To Global Warming Date: June 20, 2008 Source: Carnegie Institution Summary: Nitrogen is essential to all life ...

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

What does nitrogen do for plants? Read on to learn how to improve the health of your plants and how to add nitrogen to soil by fixing the nitrogen cycle in your garden. This article is also in ...

The two forms of nitrogen available to most plants in the soil and water are nitrate (NO3) and ammonium (NH4). The nitrate form of nitrogen is highly soluble in water and will often leach out of ...

The human element But by the start of the 20th century, human contributions to the nitrogen cycle began skyrocketing. "In fact, no phenomenon has probably impacted the nitrogen cycle more than human ...

Matthew writes: “My tattoo is taken from a 1950’s biology textbook. The reason it means so much to me is because of the relevence of the nitrogen cycle to the cycle of life. The horse dies ...

Nitrogen is essential to life on Earth. It is a component of all proteins, and it can be found in all living systems. Nitrogen compounds are present in organic materials, foods, fertilizers ...