We are carrying out research in several areas of dynamics and electronic structure, with a special emphasis on applying quantum mechanics to the treatment of large and complex systems. Dynamical calculations are being carried out for combustion (with a special emphasis on biofuel mechanisms) and atmospheric reactions in the gas phase and catalytic reactions in the condensed phase. Both thermal and photochemical reactions are under consideration. New orbital-dependent density functionals are being developed to provide an efficient route to the potential energy surfaces for these studies. New methods are also being developed for representing the potentials and for combined quantum mechanical and molecular mechanical methods, with a special emphasis in the latter case on improving the electrostatics. New techniques for modeling vibrational anharmonicity and for Feynman path integral calculations are also under development.