But they were not the last. NASA -- the National Aeronautics and Space Administration launched six more Apollo flights.

VOA: special.2009.07.29

Today we tell about one of the most important scientific discoveries of the last century -- the development of HeLa cells.

VOA: special.2010.07.21

The site was launched to the public last September by a start-up company led by its twenty-six year old founder.

VOA: special.2009.02.26

Last December, the Australia-based company Invetech reported that it had delivered the world's first production model 3-D bio-printer for Organovo.

VOA: special.2010.10.19

The Department of Education reported last year that about two-thirds of graduates from four-year colleges had student loan debt.

VOA: special.2010.04.15

Iran is observing the thirtieth anniversary of the country's Islamic revolution with a ten-day celebration that began last Saturday.

VOA: special.2009.02.07

A study in the United States found that eighty-four percent of undergraduates last year had at least one credit card.

VOA: special.2009.05.28

But,as Faith Lapidus reports, the Census Bureau says more than one million women in America were stay-at-home mothers last year.

VOA: special.2010.04.23

The Census Bureau says fifty-four percent of full time students at two- and four-year colleges last year were female.

VOA: special.2009.11.19

A USA Today/Gallup Poll last May showed that fifty-eight percent of conservatives and Republicans supported letting gays and lesbians serve openly.

VOA: special.2010.02.06

Voter turnout was lower than in the last national elections in two thousand five -- sixty-two percent compared to seventy-six percent.

VOA: special.2010.03.13

Last year thirty-seven percent of Peace Corps volunteers were serving in Africa and twenty-four percent in Latin America.

VOA: special.2011.03.28

The Institute of International Education in New York says thirty-one percent during the last academic year were undergraduates.

VOA: special.2009.02.05

An example is the story of a young man whose last name was spelled D-U-L-A but pronounced "Dooley."

VOA: special.2009.07.27