Astronomers use the observatory to study the positions and movements of the Earth, sun,moon and other objects in space.

VOA: special.2009.09.21

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

The study concludes that the worldwide health effects from drinking are about the same as that of smoking nine years ago.

VOA: special.2009.09.08

Then, he finished a study program in non-profit management because he wanted to do something different with his life.

VOA: special.2009.01.28

The study linked almost one in every five such deaths in two thousand eight to the virus that causes AIDS.

VOA: special.2010.04.14

The Kansas State University study, however, may show a way that reduces risk for people who grill on high heat.

VOA: special.2010.06.01

He says the agency currently has twenty-eight projects working in astrobiology, or the study of life in outer space.

VOA: special.2010.05.25

The Institute of International Education in New York says that was the biggest increase of any area of study.

VOA: special.2009.05.07

Secretary Gates said he has launched a year-long study of the possible effects of a change in the law.

VOA: special.2010.02.06

A recent study found that people who smoke are nearly two times as likely as non-smokers to develop Alzheimers disease.

VOA: special.2010.03.09

For example,a two thousand four study showed that the number of school nurses nationally failed to meet federal guidelines.

VOA: special.2009.08.06

The findings came from a study of more than three hundred forty thousand adults living in the United States.

VOA: special.2010.08.03

Now,we talk to a researcher who presented a study this week at the Pediatric Academic Societies meeting in Vancouver,Canada.

VOA: special.2010.05.06

For most measures of development, the study found that an earlier bedtime was also a predictor of higher scores.

VOA: special.2010.06.09