The ocean carbon sink is ailing
Peer-Reviewed Publication
Updates every hour. Last Updated: 3-Sep-2025 10:12 ET (3-Sep-2025 14:12 GMT/UTC)
Tulane University scientists published the first global assessment of ecological risks from ocean plastics, showing that the greatest dangers are not always in visible “garbage patches” but in areas where plastics overlap with dense marine life and pollutants. Their model maps worldwide “ecological risk hotspots,” highlighting threats from ingestion, entanglement, pollutant transport, and chemical leaching, with vulnerable zones including the North Pacific, North Atlantic, North Indian Ocean, and coastal East Asia. The study warns that risks could triple by 2060 without stronger action. But coordinated global efforts to reduce plastic use and improve waste management could significantly lessen the threats.
The natural phenomenon of upwelling, which occurs annually in the Gulf of Panama, failed for the first time on record in 2025. A study led by scientists from the Smithsonian Tropical Research Institute (STRI) indicates that the weakening of the trade winds was the cause of this event. This finding highlights the climate’s impact on fundamental oceanic processes and the coastal communities that depend on them
Scientists from an International Council for the Exploration of the Sea (ICES) working group have called for new research to enhance habitat protection for juvenile fish species. Experts from the ICES' Working Group on the Value of Coastal Habitats for Exploited Species (WGVHES), led by Dr Benjamin Ciotti from the University of Plymouth (UK), undertook a comprehensive review to evaluate the approaches being used to assess juvenile habitat quality. Their resulting study highlights a major gap in the evidence needed to evaluate habitat quality which is in turn leading to a mismatch between policy needs and available science, with management decisions often relying on incomplete or indirect indicators.
Glaciers across High Mountain Asia are losing more than 22 gigatons of ice per year. The impact of a warming climate on glacial loss is undisputed—this new study provides the first evidence that seasonal shifts in rainfall and snowfall patterns, particularly of the South Asian monsoons, are also exacerbating glacier melting across the region.