Years later, Ms.Skloot began research for a book about Henrietta Lacks, her cells and their influence on medical and scientific history.

VOA: special.2010.07.21

Two years later Captain Creesy and his wife again took the Flying Cloud from New York to San Francisco.

VOA: special.2009.12.23

Many years later, Wiley Post would say that first airplane was the most wonderful thing he had ever seen.

VOA: special.2009.03.18

Ten years later, the owner of the land, George Allan Hancock, gave it to the government of Los Angeles.

VOA: special.2010.04.07

Just three years later, she was performing with famous jazz and blues musicians including Clark Terry, Oscar Peterson and Joe Williams.

VOA: special.2009.10.02

Her identity became widely known years later as a result of a legal fight between Stratemeyer Syndicate and its former publisher.

VOA: special.2009.08.24

Several years later, researchers discovered the exact cause of pellagra: a lack of the B vitamin known as niacin.

VOA: special.2009.01.27

But new research suggests that this might have a protective effect a few years later when children start school.

VOA: special.2010.12.15

That influence shows up years later in the recording of "If You Pray Right" on Miss Simone's album "Baltimore."

VOA: special.2009.10.04

Truman remembered years later. In an oral history recorded with the writer Merle Miller, Truman said: "I was afraid.

VOA: special.2011.07.28

Five years later she led the United States women's basketball team in the Goodwill Games and FIBA World Championship.

VOA: special.2009.03.29

But a few years later, the high sharp voice of Hank Williams would cut like a knife through the music world.

VOA: special.2009.11.22

Millions of years later these would become the giant rocks called Half Dome and El Capitan in Yosemite Park.

VOA: special.2009.01.07

It was like the day -- a hundred years later -- when the first American walked on the moon.

VOA: special.2010.02.25