New York is the second most energy-efficient city in the nation, thanks to its well-used public transit system.

But what else do you know about the most energy-efficient vehicle ever created?

The station is also the most energy-efficient transit facility in the world.

Process planning - plan to use equipment and production lines in the most energy-efficient way.

Yet market forces alone, even considerably higher energy prices, will not be enough to cause wholesale adoption of the most energy-efficient technology, the report said.

What are five of the most energy-efficient computers on the market?

The most energy-efficient models are the ones with sensors.

Motor coaches are the most energy-efficient way to see the park.

We must promote the most energy-efficient means of transport more.

Lastly, a strategy must be developed to turn Europe into the most energy-efficient economy in the world.