The team examined results from a Norwegian study of more than nine hundred people with C.O.P.D.

VOA: special.2009.06.23

In both cases, women had more severe C.O.P.D.

VOA: special.2009.06.23

In both cases,women had more severe C.O.P.D.

VOA: special.2009.06.03

The W.H.O.says since 1988, more than two billion children around the world have been immunized against polio.

VOA: standard.2010.08.02

O'Hanlon says there should be more permanent changes in mass transit security.

VOA: standard.2010.03.30