The use of fluoride to protect teeth is common in many parts of the world.

VOA: special.2009.03.11

He says serpentine or serpentinite, is formed under the ocean floor and is common in coastal areas like California.

VOA: standard.2010.07.26

Stomach cancer has become more common in some areas where food is often not stored in a cold place.

VOA: special.2009.01.13

The problem is especially common along the west coast of Africa and in some ports in Asia and the Pacific.

VOA: special.2009.02.10

For her the idea that birds have come from dinosaurs is just common knowledge and there's nothing surprising in that at all."

VOA: special.2009.12.01

We have done a lot. We are suffering in terms of our economy and obviously it is affecting our common man in the country."

VOA: special.2010.12.18

The discovery is exciting because it suggests that the building blocks of life may be more common in the universe than scientists had thought.

VOA: special.2009.09.30

The most common seasonal flu virus found in the United States this year is type A(H1N1).

VOA: special.2009.03.04

But George Haley at the University of New Haven in Connecticut says labor unrest is common.

VOA: special.2010.06.18

In fact,this is the single most common distinguishing characteristic of an American prisoner -- illiteracy.

VOA: special.2009.04.27

Her show "Common Threads" is currently at the Smithsonian American Art Museum in Washington,D.C.

VOA: special.2009.07.17

Sterling College in Craftsbury Common,Vermont, is one of the colleges that supports sustainable agriculture.

VOA: special.2009.04.14

This is the most common cause of an unusual,or abnormal, heartbeat in older adults.

VOA: special.2009.09.22

"Public education is our greatest tool - arming people with knowledge about the ways in which common criminal enterprises have tried to take advantage of them."

VOA: special.2011.06.24