Climate hacking could cool the planet while stressing ocean ecosystems

A new review examined eight climate intervention approaches and found each could affect ocean chemistry and ecosystems in different ways. The article notes some commercial activity is already underway and that models and data remain incomplete.

Scientists are studying several ways to remove carbon dioxide or temporarily reduce warming. A new review examined eight types of climate interventions and assessed how each could affect marine ecosystems. Some approaches aim to remove carbon dioxide (CDR). Others, like solar radiation modification, would temporarily lower temperatures without removing CO2. Key facts: - The review grouped interventions into carbon dioxide removal (CDR) and solar radiation modification and found all carry potential benefits and risks for the ocean. - Methods judged to have relatively lower direct ocean risk included electrochemical ocean alkalinity enhancement, adding carbonate minerals, and sinking terrestrial biomass in low-oxygen waters, but uncertainties remain. - Biological approaches and some mineral additions can change nutrient balances and acidification, which could shift plankton communities and affect fisheries. - The article mentions that startups are beginning to commercialize marine carbon removal and sell credits to companies such as Stripe and British Airways, while models and observational data are still limited. Summary: The review indicates interventions could reduce warming but may also change ocean chemistry and ecosystems in ways that are not yet well understood. It reports that commercialization is starting even as models and data remain incomplete. Undetermined at this time.