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

He says the earlier study gained so much recognition, it became -- in his words "fixed in many people's minds as true."

VOA: special.2009.06.24

In this study, Hamer and his colleagues combined measurements of tobacco exposure with interviews focused on mental health issues.

VOA: standard.2010.06.15

Perls and his colleagues publish their study in the online edition of the journal Science.

VOA: standard.2010.07.14

His study was published this week in the journal PLoS Medicine.

VOA: standard.2010.03.25

His study shows that a diet high in white rice is associated with an increased risk of Type 2 diabetes, a serious health condition in which the body is unable to properly use sugar in the bloodstream.

VOA: standard.2010.06.25