barack,obama,keystone,pipeline,energy,independence,tar sands,canada,alberta,clean energy,dirty energy,indecision,fossil fuels,greenhouse,gasses,aquifers,water,ogallala,climate change

barack,obama,keystone,pipeline,energy,independence,tar sands,canada,alberta,clean energy,dirty energy,indecision,fossil fuels,greenhouse,gasses,aquifers,water,ogallala,climate change