Recently, researchers at the University of Colorado School of Medicine found that the effects of the surgery may not be long-lasting.

VOA: special.2011.07.05

People did not object to making young children work long hours, in places that had bad air and bad light.

VOA: special.2010.08.01

President Obama said this week that he is not interested in "militarizing" the three thousand kilometer long border.

VOA: special.2009.03.14

John Henry grew up in a world that did not let children stay children for long.

VOA: special.2009.02.21

It was not long after the Kennedy assassination that I actually got to meet Mister Cronkite.

VOA: special.2009.08.16

Calhoun said that for a long time he had believed that the dispute over slavery -- if not settled -- would end in disunion.

VOA: special.2009.03.26

And,he said that the first Americans would not be forgotten as long as he is president.

VOA: special.2009.11.13

The circus has been popular for so long that it is not surprising that words and expressions connected with it are part of everyday speech.

VOA: special.2009.01.11

Not long after that, the Captain married Trudy Braxton who lived on the island.

VOA: special.2009.02.14

Major Anderson and his men at Sumter, he said,could not wait that long.

VOA: special.2009.08.06

The truce did not last long. In the weeks that followed, a number of attempts were made to stop or arrest the leaders of the Free State government.

VOA: special.2009.05.07

But thoughtful people did not believe that peace would last long.

VOA: special.2009.04.16

And not only that, the utility must agree to a long-term contract that covers power generation costs, plus a decent profit.

VOA: standard.2010.03.23

The hope is that it will not take too long, for fear a power vacuum could develop.

VOA: standard.2010.03.07