Locating microplastic hotspots along the Texas coast
Peer-Reviewed Publication
Updates every hour. Last Updated: 1-May-2025 10:08 ET (1-May-2025 14:08 GMT/UTC)
There are trillions of microplastic particles, ranging in size from about one micrometer to a few millimeters, on Earth. Many of these particles end up in the oceans, where they disrupt nutrient cycles, are ingested by marine animals or transport pollutants. To better understand how microplastics accumulate and disperse in marine environments, new research published in ACS’ Environmental Science & Technology reflects efforts to locate hotspots — areas with high concentrations of microplastics — in Texas coastal bays.
A paper published in National Science Review highlights the role of China's natural terrestrial ecosystems (NTEs) as significant sources and sinks of methane (CH₄) and nitrous oxide (N₂O), two potent greenhouse gases. The study, led by Dr. Tingting Li and her team, compiles a new CH₄ and N₂O inventory for China's NTEs from 1980 to 2020, revealing the complex interplay between climate change, land-use changes, and greenhouse gas emissions. The findings underscore the importance of NTEs in global greenhouse gas budgets and provide recommendations for enhancing carbon sequestration and reducing emissions.
Lysosomes are considered as the major degradative site and were recently recognized as dynamic regulators of cellular homeostasis. Many diseases, including cancer, have been linked to functional changes in lysosomes. Natural products and their structural analogs have historically made major contributions to pharmacotherapy. By employing the natural small molecule isowalsuranolide as a chemical probe, the underlying mechanisms of its lysosome-inducing effects were investigated. This study revealed that isowalsuranolide targets TrxR1/2 and triggers lysosomal biogenesis and autophagy via the p53-TFEB/TFE3 axis. This study provides important insight into the lysosomal adaptation mechanism to redox signals and the application of lysosome-inducing agents in the treatment of lysosome-related diseases, including cancer.
Green hydrogen from water splitting has emerged as a critical energy vector with the potential to spearhead the global transition to a fossil fuel-independent society. The feld of catalysis has been revolutionized by single-atom catalysts (SACs), which exhibit unique and intricate interactions between atomically dispersed metal atoms and their supports. Recently, bimetallic SACs (bimSACs) have garnered signifcant attention for leveraging the synergistic functions of two metal ions coordinated on appropriately designed supports. BimSACs ofer an avenue for rich metal–metal and metal–support cooperativity, potentially addressing current limitations of SACs in efectively furnishing transformations which involve synchronous proton–electron exchanges, substrate activation with reversible redox cycles, simultaneous multi-electron transfer, regulation of spin states, tuning of electronic properties, and cyclic transition states with low activation energies. This review aims to encapsulate the growing advancements in bimSACs, with an emphasis on their pivotal role in hydrogen generation via water splitting. We subsequently delve into advanced experimental methodologies for the elaborate characterization of SACs, elucidate their electronic properties, and discuss their local coordination environment. Overall, we present comprehensive discussion on the deployment of bimSACs in both hydrogen evolution reaction and oxygen evolution reaction, the two half-reactions of the water electrolysis process.
Koun Shirai from The University of Osaka gives an answer to a long-standing question in theoretical glass physics: what does it mean to be an order parameter for an inherently out-of-equilibrium system? Starting from first principles, Shirai reexamines what it means to be in equilibrium and arrives at the conclusion that order parameters of glass are merely time-averaged positions of atoms.
Researchers developed a computational model to optimize melt crystallization—a low-energy method for producing ultra-pure dimethyl carbonate (DMC). The study reveals how natural convection shapes crystal layer and proposes heating strategies to improve efficiency, offering industry a sustainable path to high-purity materials.