They believe the simian immunodeficiency virus,S.I.V., probably crossed from chimpanzees to humans in the last one hundred years.

VOA: special.2009.09.08

Scientists have believed that S.I.V.did not cause a similar immune system problem for primates.

VOA: special.2009.09.08

Doctor Hahn says she suspects chimps first got infected with S.I.V.

VOA: special.2009.09.08

Civilian scientists used the V-2 rockets to study the Earth's atmosphere.

VOA: special.2009.06.10

The V Foundation was named for Yow's friend Jimmy Valvano.

VOA: special.2009.03.29

Now,researchers say they have evidence that chimpanzees with S.I.V.

VOA: special.2009.09.08

Seventeen chimps were found to be infected with S.I.V.

VOA: special.2009.09.08

What some call the V-word - Vietnam is increasingly heard in the growing debate over U.S.involvement in Afghanistan.

VOA: standard.2009.09.09

"The U.S.data should remind us that this recovery is not likely to be V-shaped It seems to me that we are going to see rising unemployment for a long time yet,"

VOA: standard.2009.08.05

That's all these cripplesdown at the V. A...

VOA: standard.other

The U.S.Moon mission came on July 16,1969, when Armstrong, along with astronauts Buzz Aldrin and Michael Collins, climbed into Apollo 11's command module called Columbia atop a gigantic Saturn V rocket and blasted off.

VOA: standard.2009.07.16