New research reveals how the speed of ocean currents and the shape of the seabed influence the amount of heat flowing underneath Antarctic ice shelves, contributing to melting.

Scientists at the University of East Anglia (UEA) used an autonomous underwater vehicle to survey beneath the Dotson Ice Shelf in the Amundsen Sea, an area of rapid glacial ice loss largely due to increasing ocean heat around and below ice shelves.

This week in Science, Michael K. Rosen and 10 other members of a large collaboration at the Marine Biological Laboratory, the Chromatin Consortium, propose a long-awaited model for how the properties of a condensate can emerge from the properties of the individual molecules that compose it.

Even as record sargassum reaches Caribbean and Gulf shores, the Sargasso Sea — once a stable stronghold — has seen a sharp drop in healthy mats since 2015. Because sargassum mats support turtles, fish, seabirds and other marine life, a long-term drop in healthy sargassum could reshape food webs and alter the ecological balance across the broader Atlantic region.