The Smithsonian's National Museum of American History in Washington,D.C., has one of the oldest known pairs of Levi's jeans in its collection.

VOA: special.2009.12.18

When Doctor Levi-Montalcini was a young woman, she dreamed of working in Africa with Doctor Albert Schweitzer.

VOA: special.2009.05.13

Levi Strauss opened a small dry goods store, first in New York, then in San Francisco, California.

VOA: special.2011.08.12

In nineteen twenty-eight the Levi Strauss company registered the word "Levi's" as a trademark for their product.

VOA: special.2009.12.18

In nineteen eighty-six, Rita Levi-Montalcini shared the Nobel Prize in physiology or medicine for discovering processes that control the growth of cells and organs.

VOA: special.2009.05.13

Last month,Rita Levi-Montalcini became the first Nobel Prize Laureate to reach the age of one hundred.

VOA: special.2009.05.13

Levi Strauss was born in Bavaria, an area that today is part of Germany.

VOA: special.2009.12.18

The history of blue jeans usually begins with a man named Levi Strauss.

VOA: special.2009.12.18

Some of these science students work in Doctor Levi-Montalcini's laboratory in Italy.

VOA: special.2009.05.13

Doctor Jeff Levi is head of the Trust for America's Health.

VOA: special.2009.07.21

Levi praises the Obama Administration, and First Lady Michelle Obama, for trying to change eating and exercise habits.

VOA: standard.2010.07.02

Jeff Levi is one of the authors: "In 1991,there wasn't a single state that had an adult obesity rate over 20 percent."

VOA: standard.2010.07.02

Other studies point to high calorie fast food. But Levi says there are other risk factors.

VOA: standard.2010.07.02