Two of the most controversial problems facing our society today are those of global warming and reliance on fossil fuels. Our group has begun to look at two of the chemical issues that impact these problems – (1) the sequestration or the efficient transformation of carbon dioxide into feedstock chemicals and (2) the design of electrocatalytic surfaces for fuel cell design, specifically oxygen electrodes. In both cases, our approach relies on the use of a series of films containing transition metal-macrocycle complexes. We have fabricated and characterized a polymer film electrode which includes a cobalt(II)-dimethyldi(p-R-phenyl)dibenzotetraaza- [14]annulene complex. The modified electrode has proven successful in the reduction of carbon dioxide at potentials of -400 to -500 mV vs Ag/AgCl. Results to be presented include results of studies of the optimization of the macrocycle used, fabrication and characterization of the polymer films, and investigation of the electroreduction process.