The study ultimately transforms the image of the deep Southern Ocean from a passive reservoir into an active, highly dynamic heat-distribution network. Subject of Research: Mesoscale eddies and their role in transporting heat poleward through the deep Southern Ocean. Article Title: Observed poleward heat transport by mesoscale eddies in the deep Southern Ocean. “Observed poleward heat transport by mesoscale eddies in the deep Southern Ocean.” https://doi.org/10.1038/s41467-026-76674-2Image Credits: AI GeneratedDOI: 10.1038/s41467-026-76674-2Keywords: Southern Ocean, mesoscale eddies, poleward heat transport, deep ocean, ocean circulation, climate change, Antarctic ice shelves, ocean heat uptake, marine climate dynamics