More than three billion people are at risk from indoor air pollution because of the heating or cooking fuels they use.

VOA: special.2010.02.01

"First off,there is the infectious disease risk because if you use human blood there's a lot of transmissible diseases.

VOA: special.2009.08.03

Often the company would use mules instead of horses to pull its stagecoaches because the Indians had no interest in mules.

VOA: special.2010.04.26

American investors and bankers were afraid their money would drop in value because of the use of silver.

VOA: special.2010.06.24

India's camels have lost the use of some traditional grasslands and forests because of development and climate change.

VOA: special.2009.01.13

He says that skyscrapers are clearly popular around the world because they provide a huge amount of shelter and use less land space.

VOA: special.2010.03.31

The two wanted to use bicycles as transport because they believe strongly in human power.

VOA: special.2009.12.04

Some said it happened because American factories were producing more goods than people could use.

VOA: special.2010.06.17

Drivers must use special care because of ice and snow on the roads.

VOA: special.2009.01.07

"The thing about clay is every culture knows clay, because they use it.

VOA: special.2009.09.09

Governments,big corporations and individuals use BlackBerry devices because they are highly secure.

VOA: special.2010.08.06

Many climbers like bouldering because they can use less equipment.

VOA: special.2009.12.09

I don't want to use my family name because I shall probably have several scandals while I live and I don't want to cause them any trouble until I am famous, when nobody will mind.

VOA: special.2009.09.20

Because before,as you remember, the term "disproportionate use of force" was used,as if there is a proportionate use to occupy other countries' territory."

VOA: standard.2010.07.05