A "tornado outbreak" is often defined as six or more tornadoes produced by the same weather system within a day.

VOA: special.2010.05.11

Right now,as schools prepare to begin a new year, one concern is the H1N1 virus, often called swine flu.

VOA: special.2009.08.13

Mr.Hawass is often described as a colorful leader who has brought Egypt's long-ago past to the attention of the world.

VOA: special.2011.03.08

It is a way for people to establish their identities in often unfriendly areas as they struggle to hold their communities together.

VOA: special.2009.02.22

The road is narrow and the traffic is often slow as it travels through each of the small towns of the Keys.

VOA: special.2010.03.22

Others hate that name. Whatever you call it, one artist often used as an example is the singer,songwriter and harp player Joanna Newsom.

VOA: special.2009.07.27

A comet is a huge ball of frozen gas and dust that often releases a long trail of material as it nears the sun.

VOA: special.2009.09.30

Thailand's political crisis is often described simply as a fight between the poor and the rich.

VOA: special.2010.05.22

So she made Nancy Drew independent or "spunky" as she is often described.

VOA: special.2009.08.24

Her music is often described as complex but accessible, appealing to wider audiences.

VOA: special.2010.07.12

This idea is often described as "the separation of church and state."

VOA: special.2009.05.22

He said this is often seen as a problem for Mali.

VOA: special.2010.03.30

Bleach is often used as a whitening agent when washing clothes.

VOA: special.2009.10.13

But her mother who lives nearby is sick. And she is worried she will not be able to visit as often if she is housed far away.

VOA: standard.2010.03.29