C.D.C. official Janet Collins says breathing secondhand smoke has immediate harmful effects on a person's heart-and-lung system.

VOA: special.2009.01.07

We attended this year's United States Air Guitar Championships in Washington,D.C.to learn more about this unusual activity.

VOA: special.2009.08.14

Thats a really big deal. Without it, anything like the modern stock market, I'd say,is impossible."

VOA: special.2010.03.05

They play indoors. Everything's indoors. And so we're actually starting to see low levels of vitamin D in areas where the sun is plentiful."

VOA: special.2011.01.05

Researchers say they observed shortages in the brain's reward system in patients with A.D.H.D.

VOA: special.2009.09.29

Senator Claire McCaskill described synthetic C.D.O.s during a Senate subcommittee hearing.

VOA: special.2010.04.30

The Smithsonian's National Air and Space Museum in Washington,D.C.owns the plane.

VOA: special.2009.03.18

The State Department on Thursday stopped short of formally calling Mr.Zelaya's ouster a military coup d'etat, which carries with it harsher aid penalties mandated by Congress.

VOA: standard.2009.09.03

The Secretary of State said she is working to integrate U.S.aid efforts more closely with diplomacy and defense operations abroad without politicizing aid programs saying the "3-D's" - development, diplomacy and defense must be mutually-reinforcing.

VOA: standard.2010.01.06

This week: We play music by Somali-born hip-hop artist K'naan, And answer a listener question about the nation's capital,Washington,D.C.

VOA: special.2009.03.20

Washington,D.C. is the country's capital but it is a city,not a state, so it does not have its own star.

VOA: special.2010.04.02

Barbara Klein has more. The museum at Ford's Theatre was created to show Abraham Lincoln's life, and death,in Washington,D.C.

VOA: special.2009.07.24

Here is part of it. "I used to try on Mommy's jeans, just to see how they'd fit on me.

VOA: special.2009.04.27

That was part of a speech that first lady Michelle Obama gave at George Washington University's graduation ceremony in Washington,D.C.

VOA: special.2010.05.28