And they will study whether it is involving in controlling sleep quantity alone, or also what scientists call the "wakefulness-behavioral drive."

VOA: special.2009.08.26

They can also cause them. In the United States alone, the number of infections in hospitals is estimated at close to two million each year.

VOA: special.2010.05.25

The two men ate alone, then they sat in the living room and read.

VOA: special.2009.03.07

They had passed out of his life. He must meet his last hour alone.

VOA: special.2010.02.27

They were alone on sixty-four million square miles of ocean.

VOA: special.2011.05.04

They can be given alone or in combination with levodopa.

VOA: special.2010.11.02

They said they only wanted to be left alone.

VOA: special.2009.10.22

They urge people to leave the birds alone.

VOA: special.2010.03.02

But they are not supposed to work alone.

VOA: special.2010.06.16

They just wanted to be left alone.

VOA: special.2009.11.05

And she hopes her celebrity and advocacy will help the thousands struggling with mental disorders realize they are not alone.

VOA: standard.2010.05.18

They think Shahzad may have acted alone when they say he parked his car rigged with bomb materials in Times Square.

VOA: standard.2010.05.06

If left alone,what they do is will put native medicines or some unwanted medicines and spoil their eyes.

VOA: standard.2010.05.25

Ademar Barilli says that women traveling alone are especially vulnerable, and that the safe house pays special attention to such cases, although they are not unusual.

VOA: standard.2009.09.01

"There are almost a quarter of a million concealed handgun permit holders in Virginia alone and this will allow them again to have a choice when they go out to eat."

VOA: standard.2010.07.06