Environmental Geochemistry Issues Semi-Monthly

Estimated Agricultural Pesticide Use (Dicamba, 2019), USGS ; Link TRUMP EPA Announced Plan to Reapprove Dangerous Drift-Prone Pesticide Dicamba (News Release, Center for Biological Diversity ; July 23, 2025) https://biologicaldiversity.org/w/news/press-releases/trump-epa-announces-plan-to-reapprove-dangerous-drift-prone-pesticide-dicamba-2025-07-23/ EPA announced Proposed Decision to Approve Registration of New Uses of Dicamba, Outlines New Measures to Protect Human Health, Environment (Press Release, US EPA ; July 23, 2025) https://www.epa.gov/pesticides/epa-announces-proposed-decision-approve-registration-new-uses-dicamba-outlines-new Also... Dicamba drift:  New use of an old herbicide disrupts pollinators (News Release, University of Michigan ; March 4, 2025) https://news.umich.edu/dicamba-drift-new-use-of-an-old-herbicide-disrupts-pollinators/ Featured Research Article: Off-target drift of the herbicide Dicamba disrupts plant-pollinator interactions via novel pat...

CAMP Magmatism in the context of Pangaea ,  Williamborg ;  CC BY-SA 3.0 ,  Link Pulses of ocean acidification at the Triassic-Jurassic boundary (TRUDGILL et al ., 2025) https://www.nature.com/articles/s41467-025-61344-6 Mechanisms of global climate change during the five major mass extinctions (KAIHO, 2025) https://www.nature.com/articles/s41598-025-01203-y.pdf Also... How the world of the end-Triassic extinction was similar to today - and how it differed (Howard LEE, Ars Technica ; February 8, 2023) https://arstechnica.com/science/2023/02/what-messages-does-the-end-triassic-extinction-hold-for-today/ Contrasting terrestrial and marine ecospace dynamics after the end-Triassic mass extinction event (CRIBB et al. , 2023) https://royalsocietypublishing.org/doi/10.1098/rspb.2023.2232 Molecular and isotopic evidence reveals the end-Triassic carbon isotope excursion is not from massive exogenous light carbon (FOX et al. , 2020) https://www.pnas.org/doi/10.1073/pnas.19176611...

(SEVERE  et al. , 2025) The Transport of Microplastics from Soil in Response to Surface Runoff and Splash Erosion (SEVERE et al. , 2025) https://pubs.acs.org/doi/10.1021/acs.est.5c04795

( NIGRA  et al. , 2025 ) Exposure to Low Levels of Arsenic in Public Drinking Water Linked to Lower Birthweight, Preterm Birth (Stephanie BERGER, Columbia University - Irving Medical Center ; June 17, 2025) https://www.publichealth.columbia.edu/news/exposure-low-levels-arsenic-public-drinking-water-linked-lower-birthweight-preterm-birth Featured Research Article: Public Water Arsenic and Birth Outcomes in the Environmental Influences on Child Health Outcomes Cohort (NIGRA et al. , 2025) https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2835321#250399059 Also... ( MARTINEZ-MORATA  et al. , 2022 ) Nationwide geospatial analysis of county racial and ethnic composition and public drinking water arsenic and uranium (MARTINEZ-MORATA et al. , 2022) https://www.nature.com/articles/s41467-022-35185-6 Websites : Arsenic, Inorganic (IRIS Toxicological Review; Final Report, 2025;  US EPA) https://iris.epa.gov/document/&deid=363892 Arsenic and Drinking Wa...

Map of Al-Khankah, Egypt,  Weather-forecast.com ;  Link Calibration-free picosecond LIPS for quantifying heavy metals in soils near Egyptian industrial sites (EL-SAEED et al., 2025) https://www.nature.com/articles/s41598-025-04395-5

Aerial View of the Lancang River, Jinggu Linxiang Section ,  瑞丽江的河水 ;  CC BY-SA 4.0 International ,  Link Sediment mercury and methylmercury dynamics during reservoir operation (LIU et al ., 2025) https://www.nature.com/articles/s41598-025-03255-6

Hydrogen ,  SE3-29X ;  CC BY-SA 4.0 International ,  Link Scientists define ingredients for finding natural clean hydrogen (News Release, University of Oxford ; 13 May 2025) https://www.earth.ox.ac.uk/article/scientists-define-ingredients-finding-natural-clean-hydrogen Featured Research Article Natural hydrogen resource accumulation in the continental crust (BALLENTINE et al. , 2025) https://www.nature.com/articles/s43017-025-00670-1

BLACK and YOUNG, 2025 Household-Level Variability of Nontarget Analytical Results for Drinking Water Provides a Tool for Uncovering Constituents Introduced by Distribution System Components (BLACK and YOUNG, 2025) https://pubs.acs.org/doi/10.1021/acs.est.4c14749

Mississippi River Delta (MODIS) ,  NASA ;  Link Chevron ordered to pay more than $740 million to restore Louisiana coast in landmark trial (Jack BROOK, AP News ; April 4, 2025) https://apnews.com/article/chevron-louisiana-land-loss-lawsuit-oil-e02e2bdd56095e79c4d2bce60bf957c9 Map of Louisiana Highlighting Plaquemines Parish , David BENBENNICK ; Link

Kakhovka Dam destruction , By Contains modified Copernicus Sentinel data 2023 , Attribution, https://commons.wikimedia.org/w/index.php?curid=133368474 Kakhovka dam attack exposed 'toxic time bomb' of heavy metal pollution (Julia ROBINSON, RSC   Chemistry World ; 18 March 2025) https://www.chemistryworld.com/news/kakhovka-dam-attack-exposed-toxic-time-bomb-of-heavy-metal-pollution/4021155.article Featured Research Article: Environmental effects of the Kakhovka Dam destruction by warfare in Ukraine (SHUMILOVA et al. , 2025) https://www.science.org/doi/10.1126/science.adn8655 Ukraine|Nova Kakhovka Dam Breach , ERCC ; CC BY-SA 4.0 International , Link

Palawan Island, Philippines ,  Milenioscuro ;  CC BY-SA 4.0 International ,  Link Immobilization of Chromium by Iron Oxides in Nickel-Laterite Mine Tailings (DELINA et al. , 2025) https://pubs.acs.org/doi/10.1021/acs.est.4c05383 Also... Palawan imposes 50-year mining moratorium (Geraldford TICKE and Jordeene B. LAGARE, Inquirer.net ; March 9, 2025) https://newsinfo.inquirer.net/2041339/palawan-imposes-50-year-mining-moratorium UNESCO World Heritage Site Puerto Princessa Subterranean River National Park https://whc.unesco.org/en/list/652/ Puerto Princessa Subterranean River Cave, Stalactites, Palawan, Philippines , Vyacheslav ARGENBERG ; CC BY-SA 4.0 International , Link

Lake Nasser location ,  Mark DINGEMANSE ;  CC BY-SA 2.5 ,  Link Study of the hydrogeochemical processes and its impact on the quality of groundwater in the area between Abu Simbil and Tushka, Western Desert, Egypt (MOHALLEL, 2025) https://www.nature.com/articles/s41598-025-90669-x Lake Nasser, Egypt ,  European Space Agency (ESA) ;  CC BY-SA 3.0 IGO ,  Link

Map of the State of Pennsylvania, USA, with Main Roads, and Counties.    Kirill SHRAYBER ;  Link Quantification of PFAS in soils treated with biosolids in ten northeastern US farms (OVIEDO-VARGAS et al. , 2025) https://www.nature.com/articles/s41598-025-90184-z Farmstead in Winter, Windsor Township, Berks County, Pennsylvania , Nicolas/Dincher ; CC BY-SA 2.0 , Link .   

Jewel-toned Lakes of the Qinghai-Tibet Plateau , NASA ; Link Heavy metals impact environmental capacity of oasis soils in Qinghai-Tibet Plateau dry zone (HAN et al ., 2025) https://www.nature.com/articles/s41598-025-86059-y Tibetan Plateau , Alan Mak ; CC BY-SA 3.0 , Link