And it is holding up over years, despite casualties and setbacks."

VOA: standard.2009.09.29

He was forty years old. Over the years,historians and medical experts have tried to explain the cause of Poe's death.

VOA: special.2009.02.02

Much of the information came from observations made by thousands of volunteers in more than four thousand places over forty years.

VOA: special.2009.05.12

His proposal calls for insuring thirty million more Americans at a cost of about one trillion dollars over ten years.

VOA: special.2010.02.27

The subject is pain. Over the years,however, medical studies have led to new hope for patients who are hurting.

VOA: special.2010.05.04

Over the years, the program has provided millions of dollars to help African American students get money for college.

VOA: special.2009.11.01

The collision of the Russian and American satellites was the first of its kind in over fifty years of space travel.

VOA: special.2009.04.01

Darwin had been working on his theory for over twenty years when he published " On the Origin of Species."

VOA: special.2009.12.01

But the president faces resistance over the price of his plan, which could cost a trillion dollars over ten years.

VOA: special.2009.07.25

Over the years, he has worked with farmers and seed companies and developed more than eighty seed typesfor Africa.

VOA: special.2009.06.16

Over the years,researchers have identified several substances in the blood that can serve as what they call cardiac biomarkers.

VOA: special.2009.07.15

Over the years, he has worked with farmers and seed companies and developed more than eighty seed types for Africa.

VOA: special.2009.07.07

They criticized a proposal for industrialized nations to pay developing countries ten billion dollars a year over three years.

VOA: special.2009.12.12

For over sixty years, Sendak's artistic skill has brought to life richly imaginative worlds filled with children, animals and magical creatures.

VOA: special.2009.10.05