At his ninety-fifth birthday party in March, Norman Borlaug told VOA that he was worried about the world's ability to feed itself.

VOA: special.2009.09.22

Southerners cannot be trusted." The radicals also worried about what would happen to the recently freed slaves.

VOA: special.2010.01.21

Upshur was worried about reports that Britain was interested in ending slavery in Texas.

VOA: special.2009.02.05

He worried about its future. Roosevelt wrote: "I recognize the right and duty of this generation to develop and use the natural riches of our land.

VOA: special.2010.08.12

Borlaug said he was worried about the world's ability to feed itself.

VOA: special.2009.11.10

Lee had not worried about the large Union Army of the Potomac.

VOA: special.2009.11.05

If you are still worried about exercise for osteoporosis,try taking a walk.

VOA: special.2010.08.31

He made friends easily. Those who knew Pierce best worried about this.

VOA: special.2009.04.16

Lately he worried about a new threat, a fungus called Ug99.

VOA: special.2009.09.22

But he was worried about the future of the United States.

VOA: special.2010.06.17

They both worried about the possible use of a hydrogen bomb.

VOA: special.2009.06.14

The American people also were worried about the nation's economic situation.

VOA: special.2010.03.04

President Lincoln worried about the presence of Confederate supporters in Maryland.

VOA: special.2009.08.20

President Lincoln was becoming increasingly worried about Virginia's military moves.

VOA: special.2009.08.20