An article by ScienceDirect written by Schuler, Morana and other researchers in March 2022 mentions that there is a possibility of using sustainable chemistry to take on the battle against climate change. This is done through using various chemical compounds but mostly oxalic acid, an organic acid which is able to reduce CO2 in the atmosphere. There is however a challenge in moving towards achieving sustainable chemistry as the electrochemical CO2 reduction is quite promising but requires an investment of two electrons per CO2 molecule and is an expensive process. Further, various alternatives have been experimented, such as exploring potential coupling partners based on their reactivity, attractiveness and side reactions of the prospective product. By using isotopic labelling, five schemes were drafted out in the study to experiment which scheme resulted to be the most promising in reducing CO2. Alternatively, the experiments show that there is a possibility of providing CO2 in a gaseous form. It is however proven that there are challenges to have abundant CO2 ready in a short space of reaction time between carbonite and formate in the general formate to oxalate formation. The above processes were just experiments and further understanding is needed for the reaction between hydride, CO2 and formate. To allow for sustainable processes the crucial reaction parameters are crucial. The researchers state that, “our work will help to accelerate the development of new processes starting from CO2-derived formates as carbon sources”.