Our fourth experimental paper on the chemical origins of life is published in Nature Ecology & Evolution. It is the result of an international collaboration with researchers in Germany and Japan. We show that three common iron-based minerals promote the hydrogenation of carbon dioxide to give, almost exclusively, the intermediates and end-products of the Acetyl CoA pathway. This enzyme-free chemistry maps closely onto the biological pathway, suggesting it had geochemical origins. Congrats to Kamila and Sreejith from our group and thanks to our great collaborators! Free read-only version here. Paywall version here. Also check out the accompanying Behind the Paper post here.