Nitrogen
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Rainfall near 700 mm marks turning point in ecosystem nitrogen retention
Rainfall near 700 mm marks turning point in ecosystem nitrogen retention Stephanie Baum Scientific Editor Andrew Zinin Lead Editor In a study published in Nature Geoscience, a research team led by Prof. Liu Lingli from the Institute of Botany of the Chinese Academy of Sciences (IBCAS) has identified a mean annual precipitation (MAP) threshold of approximately 700 mm, beyond which the dominant controls on ecosystem nitrogen retention shift. Researchers used naturally occurring soil nitrogen...
US judge halts execution by nitrogen gas, ruling it unconstitutional
US judge halts execution by nitrogen gas, ruling it unconstitutional Judge Emily Marks had previously allowed the execution to proceed, arguing that no execution is entirely without pain. A federal judge in the United States has permanently blocked Alabama from executing an inmate with nitrogen gas, after declaring that the method violates the ban on cruel and unusual punishment. On Tuesday, US District Judge Emily C Marks permanently enjoined the state from executing Jeffery Lee by nitrogen...
Judge blocks Alabama's nitrogen gas execution method, rules it is unconstitutionally cruel
A federal judge on Tuesday permanently blocked Alabama executing death row inmate Jeffrey Lee with nitrogen gas after finding that it violates the U.S. Constitution's ban on cruel and unusual punishment. U.S. District Judge Emily C. Marks handed down the ruling hours after an appeals court reversed her initial finding that the controversial execution method was constitutional. She permanently barred the state from using nitrogen gas to execute Jeffrey Lee, 49, who was scheduled to be put to...
Nitrogen-fixing genes moved into new bacterial strains, opening path beyond fertilizer
Most major crops, such as wheat and corn, require expensive nitrogen fertilizer to flourish. But what if bacteria could help those plants draw nitrogen from the atmosphere, as peas and beans do?
Plastoglobules compartmentalize nitrogen assimilation in maize
Nature, Published online: 03 June 2026; doi:10.1038/s41586-026-10610-8Chloroplast plastoglobules act as nitrogen-assimilation hubs in maize, with key enzymes enhancing nitrogen-use efficiency and offering new strategies for developing high-yield, sustainable crops.
Modeling and Simulation of Nitrogen Generation by Pressure Swing Adsorption for Power-to-Ammonia
arXiv:2604.09053v1 Announce Type: cross Abstract: Power-to-ammonia (P2A) provides a carbon-free alternative to conventional ammonia production by replacing fossil-based feedstocks with electrolytic hydrogen and nitrogen from air separation. For decentralized P2A systems, pressure swing adsorption (PSA) offers a flexible alternative to cryogenic air separation. However, its industrial implementations are largely proprietary, and open, first-principles models capable of simulating its cyclic,...
Teosinte alleles enhance nitrogen assimilation and seed protein in maize
Nature, Published online: 03 June 2026; doi:10.1038/s41586-026-10575-8Teosinte alleles enhance nitrogen assimilation and seed protein without lowering crop yield when expressed in modern maize, providing a powerful strategy for crop improvement to meet future population demands.
Magnetometry with Broadband Microwave Fields in Nitrogen-Vacancy Centers in Diamond
arXiv:2510.11720v2 Announce Type: replace-cross Abstract: Nitrogen-vacancy (NV) centers in diamond are optically addressable and versatile light-matter interfaces with practical application in magnetic field sensing, offering the ability to operate at room temperature and reach sensitivities below pT/$\sqrt{\mathrm{Hz}}$. We propose an approach to simultaneously probe all of the magnetically sensitive states using a broadband microwave field and demonstrate that it can be used to measure the...
Tiny hubs of metabolic activity optimize nitrogen use in maize
Nature, Published online: 03 June 2026; doi:10.1038/d41586-026-01583-9Structures called plastoglobules organize the enzymes that turn nitrogen into compounds needed for plant growth, offering lessons for sustainable agriculture.
Learning Parametric Nitrogen Fertilizer Response Curves Using Neuro Symbolic Regression
arXiv:2605.31276v1 Announce Type: new Abstract: Accurately modeling crop response to Nitrogen (N) fertilization is a fundamental challenge in precision agriculture, as it impacts both economic returns and environmental sustainability. Existing approaches either rely on predefined parametric forms or opaque machine learning models, limiting their ability to interpret or discover site-specific functional relationships from data. In this work, we propose a neuro symbolic regression (SR)...