The key to lowering CO2 emissions is made of metal

Researchers produce malic acid, which contains 4 carbon atoms, through artificial photosynthesis by simply adding metal ions like aluminum and iron. This solves a problem with current artificial photosynthesis technology of only producing molecules with 1 carbon atom and paves the way to exploring the use of CO2 as a raw material. https://phys.org/news/2020-09-key-lowering-carbon-dioxide-emissions.html