They say exposure at levels common among children in the United States may increase the chances that a child will be diagnosed with A.D.H.D.

VOA: special.2010.05.26

By supporting nuclear energy, the president may be seeking common ground with Republicans who have called for building as many as one hundred new nuclear power centers.

VOA: special.2010.02.19

It is testimony to what can be achieved by a transatlantic community that acts with a clear sense of common purpose,".

VOA: standard.2009.04.04