Volcanic forces may have fueled early marine life, study suggests
Analysis of fossilized rocks known as stromatolites from more than 2.5 billion years ago has provided new insights into the conditions on Earth before the evolution of oxygen.
Analysis of fossilized rocks known as stromatolites from more than 2.5 billion years ago has provided new insights into the conditions on Earth before the evolution of oxygen.
Evolution
Feb 24, 2025
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A team of engineers and physicists at Southern University of Science and Technology, in China, has created a nickel-based material that behaves as a superconductor above the -233°C (40 K) threshold under ambient pressure. ...
Growing plants can be a joyous, yet frustrating process as plants require a delicate balance of nutrients, sun, and water to be productive.
Molecular & Computational biology
Feb 20, 2025
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When superconductors were discovered in 1911, they astounded researchers with their ability to conduct electricity with no resistance. However, they could only do so at temperatures close to absolute zero. But in 1986, scientists ...
Superconductivity
Feb 19, 2025
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In many parts of India, a single noxious pollutant from coal-fired power stations drags down annual wheat and rice yields by 10% or more, according to a new study by Stanford Doerr School of Sustainability researchers.
Environment
Feb 4, 2025
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A transdisciplinary team of AMBER and CRANN researchers from the School of Chemistry at University College Cork (UCC) and the School of Physics at Trinity College Dublin (TCD) has developed sensor technology for wearable ...
Nanomaterials
Jan 31, 2025
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A West Virginia University researcher is working to understand and estimate environmental cleanup costs associated with agricultural runoff that causes polluted "dead zones" in downstream coastal systems.
Environment
Jan 30, 2025
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Teams with NASA are gaining momentum as work progresses toward future lunar missions for the benefit of humanity as numerous flight hardware shipments from across the world arrived at the agency's Kennedy Space Center in ...
Space Exploration
Jan 20, 2025
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If corn was ever jealous of soybean's relationship with nitrogen-fixing bacteria, advancements in gene editing could one day level the playing field. A recent study from the University of Illinois Urbana-Champaign shows that ...
Molecular & Computational biology
Jan 16, 2025
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Researchers from the Hong Kong Polytechnic University, alongside mainland collaborators, have uncovered an unexpected phenomenon: severe wintertime ozone (O3) pollution in Lanzhou, China, driven primarily by alkene emissions ...
Earth Sciences
Jan 13, 2025
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Nitrogen (pronounced /ˈnaɪtrədʒɨn/) is a chemical element that has the symbol N and atomic number 7 and atomic mass 14.00674 u. Elemental nitrogen is a colorless, odorless, tasteless and mostly inert diatomic gas at standard conditions, constituting 78% by volume of Earth's atmosphere.
Many industrially important compounds, such as ammonia, nitric acid, organic nitrates (propellants and explosives), and cyanides, contain nitrogen. The extremely strong bond in elemental nitrogen dominates nitrogen chemistry, causing difficulty for both organisms and industry in converting the N2 into useful compounds, and releasing large amounts of energy when these compounds burn or decay back into nitrogen gas.
The element nitrogen was discovered by Daniel Rutherford, a Scottish physician, in 1772. Nitrogen occurs in all living organisms. It is a constituent element of amino acids and thus of proteins, and of nucleic acids (DNA and RNA). It resides in the chemical structure of almost all neurotransmitters, and is a defining component of alkaloids, biological molecules produced by many organisms.
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