HWN Suggests

What Is the Nitrogen Cycle and Why Is It Key to Life?

Nitrogen is a key element in the nucleic acids DNADeoxyribonucleic acid, a self-replicating material which is present in nearly all living organisms as the main component of chromosomes, and carrier of genetic information. and RNARibonucleic acid, a nucleic acid present in all living cells, acts as a messenger carrying instructions from DNA., which are the most important of all biological molecules and crucial for all living things. DNA carries the genetic information, which means the instructions for how to make up a life form. When plants do not get enough nitrogen, they are unable to produce amino acids (substances that contain nitrogen and hydrogen and make up many of living cells, muscles…

read full article

Featured

 Reactive nitrogen compounds and their influence on human health: an overview

Nitrogen (N) is a critical component of food security, economy and planetary health. Human production of reactive nitrogen (Nr) via Haber-Bosch process and cultivation-induced biological N2 fixation (BNF) has doubled global N cycling over the last century. The most important beneficial effect of Nr is augmenting global food supplies due to increased crop yields. However, increased circulation of Nr in the environment is responsible for serious human health effects such as methemoglobinemia (“blue baby syndrome”) and eutrophication of coastal and inland waters.

 The Earth Is Facing a Nitrogen Shortage Due to Climate Change, Study Says

Greenhouse gases, among many other pressures, are reducing access to this key nutrient in ecosystems around the world.

 We’ve changed a life-giving nutrient into a deadly pollutant. How can we change it back?

Nitrogen is absolutely crucial to life — an indispensable ingredient of DNA, proteins, and essentially all living tissue — yet it also can choke the life out of aquatic ecosystems, destroy trees, and sicken people when it shows up in excess at the wrong place, at the wrong time, in the wrong form. And over the past century, people have released so much of this type of nitrogen — known as reactive nitrogen — that scientists say we’ve passed the limit of what the planet can safely handle.

Articles of Interest

A World of Cobenefits: Solving the Global Nitrogen Challenge

Nitrogen is a critical component of the economy, food security, and planetary health. Many of the world's sustainability targets hinge on global nitrogen solutions, which, in turn, contribute lasting benefits for (i) world hunger; (ii) soil, air, and water quality; (iii) climate change mitigation; and (iv) biodiversity conservation.

Deadly, dirty, indispensable: the nitrogen industry has changed the world

It lays waste to ecosystems, allows wars to kill millions and has kept billions from starvation.

Human-induced nitrogen–phosphorus imbalances alter natural and managed ecosystems across the globe

The growth of the global demand for phosphorus (P) in a world flooded with reactive nitrogen (N) and CO2 emitted by human activities is faster than the growth of supply. This creates a N:P imbalance that may induce significant alterations in Earth’s organisms and ecosystems and a P limitation of natural ecosystems growth and agricultural production in the future.

Nitrogen Study Could 'Rock' A Plant's World

All plants need nitrogen to grow, and a new study says some plants get this nutrient from a surprising source. Conventional wisdom believes nitrogen for plants starts in the air and is converted by microbes in the soil into a usable form. But a report in the journal Nature finds that some nitrogen comes directly from rock.

Nitrogen Will Leed Us

Nitrogen is a colorless, odorless, inert gas which is needed by every living thing, whether plant or animal, for its existence. There is plenty of it. Around 80 per cent of the atmosphere is nitrogen — it has been estimated that there are 20 million tons of it over each square mile of the earth’s surface. But to be useful in agriculture or to man in industry or as an explosive, the nitrogen must be fixed — that is, combined with some other element such as hydrogen or oxygen.

Phosphorus and nitrogen are already at the Earth's limits

Professor Stephen Carpenter (USA), one of the two 2022 Blue Planet Prize winners, has been researching the problems of phosphorus and nitrogen cycles for more than 40 years, using lakes throughout Wisconsin for fieldwork. He points out that phosphorus and nitrogen cycles have already exceeded the Earth's limit and are broken, adversely affecting water resources around the world.

Study reveals your nitrogen footprint – and who it is impacting

Emissions of reactive nitrogen have increased more than 10-fold over the past 150 years, contributing to deaths from air and water pollution.

The Nitrogen Cycle and Human Management of Soils

The ubiquitous nature of nitrogen for the protein needs of the earth's biosphere explains why N is such an important nutrient for plant growth. Nitrogen is, therefore, a key element in the entire food system and interacts very strongly with human management.

Resources

Minerals Education Coalition

Nitrogen is a critical element for life. It is one of the six bulk elements and the fourth most common element in the human body. Nitrogen is an important constituent of DNA, nucleic acids and proteins. The nitrogen cycle, whereby chemical processes make atmospheric nitrogen available for use in plants and animals and then it is subsequently returned to the atmosphere, is a critical process for life.