11.   The developing world, vastly more energy efficient in per capita terms than the north, is on the verge of missing out on an unprecedented windfall.

12.   The portable Flashbake is energy efficient because of its speed.

13.   There are also a host of provisions to encourage the manufacture and purchase of environmentally friendly cars, make homes more energy efficient and manufacture energy saving appliances.

14.   They are a billion times as energy efficient as conventional computers.

15.   They say the superior insulation, tightness and wall mass of concrete homes make them more energy efficient, cutting down on drafts and keeping temperatures more even.

16.   What makes an Energy Star Home unique, and energy efficient, not even counting the geothermal heating system?

17.   Besides a speedo meter, the control panel also includes a meter for efficient energy consumption.

18.   The government has been shifting to more efficient energy sources, such as oil and natural gas.

19.   To ease the problem, Vallone proposed tax breaks for businesses that become more energy efficient and programs to shift energy usage away from peak hours.

20.   Those gardens will help to make the building environmentally friendly and energy efficient, according to the architects.