Most economists and efficiency experts, after studying modern energy use, have come to similar conclusions.

NEWYORKER: The Efficiency Dilemma

The building sector has a huge energy footprint and uses a great mass of materials, so efficiency experts have targeted it for improvement.

FORBES: Can Labeling Drive Products to Be Environmentally 'Nutritious'?

Investing in whatever we need, whether it is efficiency experts, better computer monitoring programs or devising programs to increase the effectiveness of existing inspection methods, we need to do it.

FORBES: The Catch 22 In Efforts to Cut Medicare Spending

Further, a majority also expressed the belief that even if this new consciousness did create green jobs, they would occupy a small portion of the economy, including consultants, energy efficiency experts, and green analysts.

FORBES: Does CSR Require Generic Business Skills Or An MBA In Sustainability?

In the realm of efficiency, most experts believe road congestion would be reduced if self-drivers populated the roads, thanks to an orderly packing of cars closer to each other than is advisable under human control.

ENGADGET: Editorial: Self-driving cars FTW, but not for everybody

Using smarter technologies, more brains and less money to wring more work from less delivered energy--what energy experts call "end-use efficiency"--is the largest, cheapest, safest, cleanest, fastest, most diverse, least visible, least understood and most neglected way to provide energy services.

FORBES: Magazine Article

Most experts say that city dwellers should focus their energy conservation efforts on other renewable technologies or home efficiency improvements.

CNN: Stimulus may get small wind turbines spinning

While other factors, including a sluggish U.S. economy and increasing energy efficiency, have contributed to the decline in carbon emissions from factories, automobiles and power plants, many experts believe the switch from coal to natural gas for electricity generation has been the biggest factor.

WSJ: Rise in U.S. Gas Production Fuels Unexpected Plunge in Emissions