8 September 2026/Kiel/Taliarte. A seven-week experiment led by the GEOMAR Helmholtz Centre for Ocean Research Kiel is starting today on Gran Canaria. In collaboration with international partner institutions, twelve mesocosms are being deployed in the sea. These will be used to investigate whether ground concrete rubble can be used to increase the alkalinity of seawater and what effects this has on marine life. Ocean Alkalinity Enhancement (OAE) is a promising method for increasing the ocean’s CO₂ uptake whilst simultaneously buffering acidification.

Researchers at The University of Manchester have developed a physics-based artificial intelligence framework that, for the first time, enables global-scale predictions of dissolved organic carbon cycling between seawater and marine sediments. The approach reveals a previously unquantified component of Earth's carbon cycle and could improve climate models, support research into ocean-based climate mitigation strategies, and provide new insights into the long-term storage of carbon in marine environments.