"There was a lower concentration of dopamine markers in the brain of individuals with A.D.H.D., specifically in the areas of the brain that are involved with reward and motivation."

VOA: special.2009.09.29

"The Nobel Prize in literature for 2009 is awarded to the German author Herta Mueller, who with the concentration of poetry and the frankness of prose depicts the landscape of the dispossessed,"

VOA: standard.2009.10.08

Paul Pillar,a former senior CIA intelligence officer now with Georgetown University's School of Foreign Service, favors a shift away from direct combat operations to a concentration on training Afghanistan's army and police, and economic development.

VOA: standard.2009.10.15