Roughly half the world's energy consumption goes into the construction, maintenance and operation of buildings.

Americans, however, have been supreme in their hemisphere, and they're not into maintenance.

Now that we know what value is, we can translate the concept into maintenance.

Each tree is entered into a computer data base with its species, location, size, required maintenance and potential hazards noted.

Pared to the essence, however, does not necessarily translate into easy maintenance.

To date, more than four million euro have been invested into the construction and maintenance of the village.

The owners did not seem to be putting any money into maintenance.

Both of you, Exchange people, come from that gray middle and have moved into expansion and maintenance.

"But for so many years all of the money that was supposed to go into maintenance just disappeared."

It never saw any action during the war and was placed into care and maintenance in 1949.