This way,they can observe changes in the structure of a deadly organism from one generation to the next.

VOA: special.2010.06.29

In the sixteenth century, one astronomer suggested that navigators could observe the moon as it passed in front of different known stars to tell longitude.

VOA: special.2010.07.14

But the drug can be given only in centers where specially-trained doctors can observe patients.

VOA: special.2009.01.06

They did not observe births and deaths unless they were involved in medical work.

VOA: special.2010.01.17

It was released in two thousand five to observe his ninetieth birthday.

VOA: special.2009.09.27

The National Education Association continued to observe the day in March.

VOA: special.2010.04.30

His team used satellite imaging to observe mosquito populations in Africa.

VOA: special.2010.04.20

People observe the New Year's holiday in many different ways.

VOA: special.2009.01.01

Before beginning the show, director Dadi Pudumjee asked the audience to observe a minute of silence to honor the actors and puppet experts in Japan who may have suffered after last week's major earthquake.

VOA: special.2011.03.16

I do therefore invite my fellow-citizens in every part of the United States, and also those who are at sea and those who are sojourning in foreign lands, to set apart and observe the last Thursday of November next as a day of thanksgiving and praise to our beneficent Father who dwelleth in the heavens.

VOA: special.2009.11.23

"This was the 40 percent decrease in risk. We did not observe an association for drinking three cups or less per day."

VOA: standard.2010.06.30

In effect, they not only observe the event they're reporting about, they're also absorbing it.

VOA: standard.2010.07.01

Allegations of voting irregularities are widespread and international monitors acknowledge they were not able to observe firsthand what took place in many provinces because of poor security.

VOA: standard.2009.08.22