The findings suggest that even a half-hour walk at a quick speed every day could lower the risk of cognitive impairment.

VOA: special.2011.07.27

I watched it for perhaps a half-hour until my curiosity got the better of me.

VOA: special.2009.12.07

A tension headache can last from a half hour to a whole week.

VOA: special.2010.03.30

Stephen Mbugua has a farm a half-hour's drive from the capital.

VOA: special.2009.11.02

His opponent would speak for an hour and a half.

VOA: special.2009.06.11

The operation took only a half hour.

VOA: special.2010.06.24

A half hour later,it happened.

VOA: special.2010.05.01

During the two-and-a-half hour moon walk, the astronauts frolicked in the weightlessness of outer space and planted an American flag in the lunar surface.

VOA: standard.2009.07.16

The Satellites followed with an hour and a half of inspired play defending as a unit and attackingwhen merited, and holding the feared Brazilian attack despite their numerical disadvantage.

VOA: standard.2009.10.17

"They land over there for half an hour,". "I feel a lot of the flash of the cameras that a lot of people come and they pictures me and feel the flash of the cameras."

VOA: standard.2009.07.28