In Biointerphases, researchers study the genetic characteristics of various bacteria species responsible for their survival on copper surfaces, a step toward inhibiting copper-resistant genes and managing biofouling on ship hulls. The researchers sequenced the genomes of bacterial colonies that grew on PVC panels placed in the Chesapeake Bay to identify the copper-resistant genes and tested each colony’s tolerance against copper-based water treatments. They hope to use their findings to target the molecular pathways that help bacteria express copper-resistant genes, weakening their ability to survive in copper-rich environments.

As oceans warm, some corals may hold the key to reef survival. New research reveals that heat tolerance varies not only between coral species, but also among populations living in different environments. One Hawaiian coral species from cooler, wave-exposed waters withstood significantly more heat stress than its counterparts, while another showed similar tolerance across locations. The findings reveal why understanding coral diversity and environmental history is critical to identifying resilient corals and guiding restoration efforts as marine heat waves intensify.

Reaching net zero sooner would limit long-lasting changes to El Niño and the tropical Pacific, new climate modelling suggests, although heat stored deep in the ocean means changes to the tropical Pacific could persist for centuries. 

Researchers have developed SuSha, a multi-model ensemble learning tool that predicts a microorganism's salt tolerance directly from its genome. Trained on the amino acid composition of 123 bacterial and archaeal species and validated on 2,678 metagenomes from freshwater, marine, and hypersaline habitats worldwide, SuSha achieved over 90% accuracy for extreme halophiles. It offers a powerful way to study the more than 81% of microbes that cannot be cultured in the lab.

Carbonate cerium and neodymium isotope records from South China show that low-oxygen waters invaded shallow habitats twice during the Late Ordovician Mass Extinction, with a brief recovery between the two pulses. Earth-system models suggest that rapid climate swings reorganized continental weathering and nutrient delivery, amplifying marine oxygen loss and ecological stress.