On this day we imagine Lincoln climbing the stairs to his study on the second floor.

VOA: special.2010.05.10

Nicholas Christakis and James Fowler based the study on the emotional health of almost 5,000 people.

VOA: special.2009.01.21

The funeral for the demographic decline took place at the same time as an international study on the origins of ancient Venetians.

VOA: standard.2009.11.14

Dr.Mark Hamer's study on the psychological impact of second-hand tobacco smoke appears in the Archives of General Psychiatry, a journal published by the American Medical Association.

VOA: standard.2010.06.15

"They sort of organize a group sometimes with Christian people who keep their children out of public schools and sometimes with Jewish people, and they have curriculums that you can actually study on the internet and the parents can supervise their children, that way they feel that they can protect them the best way."

VOA: standard.2010.07.12

The revolution is based on the work of scientists who study the movement of the continents a process called plate tectonics.

VOA: special.2010.01.12

As a result of the study, eleven species of mangrove have been placed on the Red List of Threatened Species.

VOA: special.2010.04.20

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

VOA: special.2009.05.19

The study centered on couples between the ages of thirty and forty-four who were born in the United States.

VOA: special.2010.02.19

The study also found greater snacking on cake, cookies and other treats that past generations might have saved for after dinner.

VOA: special.2010.03.17

But a three-year study showed that beetles like to feed more on the transgenic plants, increasing cases of wilt disease.

VOA: special.2009.10.27

We will also tell about a study of young Americans and their use of social Web sites on the Internet.

VOA: special.2009.02.03

In December, the publication Social Indicators Research reported on a study of activities that help lead to happy lives.

VOA: special.2009.03.10

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