Carbon Removal Newsroom

Ocean CDR is attracting attention from many corners of the climate community. In recent episodes, we’ve covered global policy developments in Ocean CDR regulation and research with Wil Burns and the business challenges in the space with two startups working to develop commercial methods to remove CO2 from the ocean. On this episode we complete the trilogy with a look at some recent science on the topic, focusing on the outstanding scientific questions that we’ll need to be answered before Ocean CDR can be deployed safely and effectively. First, we look at a 2021 paper from D A Siegel et al., which assesses how long CO2 stored in seawater will remain sequestered in the ocean based on the given location and depth of the process. Then we’ll discuss a Perspective piece from Nature: Ecology and Evolution from Boyd, Bach, and Hurd et al. Researchers suggested some possible unintended ecological consequences of proposed large-scale kelp planting, such as widespread drift of kelp into new ecosystems and the spread of