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This research paper examines the ability of marine calcifying zooplankton called foraminifera to adapt to climate change. By combining fossil records and a global trait-based plankton model, the study investigates how these organisms responded to past warming at the end of the Last Glacial Maximum (LGM) and projects their response to future warming scenarios. The authors conclude that while foraminifera with symbiotic algae showed some capacity to acclimatize to the deglacial warming, their ability to adapt to rapid future warming is limited. They predict that future warming will lead to a poleward migration and a decline in global foraminifera biomass, with significant implications for marine ecosystems and the carbon cycle.