Global warming : climatic and atmospheric changes -- Energy systems -- Solar power system physics and technologies -- California solar initiative program -- Energy conservation -- Passive solar heating technologies -- Fuel cell technology -- Wind energy technologies -- Ocean energy technologies -- Hydroelectric and micro-hydro turbine power -- Geothermal energy -- Biofuel, biogas, and thermal depolymerization technologies -- Fission- and fusion-type nuclear power -- Air pollution abatement -- Carbon dioxide sequestration and carbon trading economics