Grandmother, who was a rather sharp-tongued woman told people "You have a profound grasp of the obvious". That being said, efficiency is a smart way to accomplish multiple goals. Now if only some bright young entrepreneur would walk through my door with a way to put out those Chinese coal mine fires we could cut CO2 emissions by 3% right now (hint).
From Environmental Research Web:
Indirect carbon dioxide emissions stem from making the products that you buy, since the materials incorporated in the products require energy which generates carbon dioxide emissions. These emissions are very significant. Globally about 36% of all carbon dioxide emissions are from the manufacturing industry, 40% from buildings and appliances and 24% from transport. About half of the transport sector emissions are from freight haulage.