But celiac researcher Alessio Fasano says until recent years not much was known about the disease.

VOA: special.2010.11.16

Very little was known about wild chimpanzees at the time.

VOA: special.2009.11.18

However,little is known about his stay in Europe.

VOA: special.2010.07.25

But not much is known about his childhood.

VOA: special.2010.02.23

But in the soldier's hometown in the western U.S.state of Idaho, his family has known about his capture from the beginning.

VOA: standard.2009.07.20

Iran was apparently forced to reveal its existence after it became aware that western intelligence agencies had known about it for years.

VOA: standard.2009.09.28

"The purpose of this review is clear: We must compile every piece of information that was known about the gunman, and we must learn what was done with that information.

VOA: standard.2009.11.16

The students examine an issue, review what is already known, think about what they have learned and come to some conclusion.

VOA: special.2009.04.30

She is best known for her novel "The Tale of Despereaux" about a little mouse who has some big adventures.

VOA: special.2009.10.12

Shirley Griffith has more. "Glee" is about a high school singing group, also known as a glee club.

VOA: special.2010.01.08

Spreading lies about someone or excluding a person from a group is known as social or relational bullying.

VOA: special.2010.04.22

They had about two hundred college students play a version of the game known as the Prisoner's Dilemma.

VOA: special.2009.10.21

Doctor Fleischman says there is concern especially about rising numbers of what are known as late preterm births.

VOA: special.2009.10.26

She decides to make every recipe in Child's best known cookbook in one year and write her own book about the experience.

VOA: special.2009.06.12

This writer is best known for his novels about the private lives of small-town, middle class Americans.

VOA: special.2009.12.27

Today we get to know more about a famous creature known for its pale skin, pointy teeth and big hunger for human blood.

VOA: special.2010.01.20

"September Song" by Kurt Weill is one of the most well known, and saddest,songs about the season.

VOA: special.2009.11.09