Volcanic activity broke the large island into pieces that came to the surface of the sea over time.

VOA: special.2009.12.16

Rosalyn Schanzer brings to life the clues that suggested to Darwin that living things evolve, or change,over time.

VOA: special.2009.02.27

Studies have shown that over time, most humans need eight to eight and a half hours of sleep for the best health.

VOA: special.2009.08.26

Some experts suggest taking pictures of moles and dating the images to compare over time.

VOA: special.2010.07.06

The borrowers are able to save money and pay back the loan over time.

VOA: special.2010.06.16

Elizabeth Custer believed the name changed over time to mean the soldiers themselves.

VOA: special.2010.03.07

But they say the land formation continues to change slowly over time.

VOA: special.2009.04.15

Despite the missile threat, Secretary Gates said there is still time to negotiate with Tehran over the country's nuclear program.

VOA: standard.2009.09.17

At the same time,the Palestinians complain that Israel's separation wall at the entrance to Bethlehem casts a dark shadow over Christmas.

VOA: standard.2009.12.25

It doesn't mean it's going to be easy. But,I think it can be over the period of time that we're talking about."

VOA: standard.2010.07.22

Clean-up crews worked over the July 4th holiday weekend, usually a time when tourists go to the beach.

VOA: standard.2010.07.05

"Time is up," "Over the next two weeks, governments have to deliver a strong and long-term response to the challenges of climate change."

VOA: standard.2009.12.06

"And with regard to the burden of disease it more than doubled,it increased over that 16 year period of time about 127 percent."

VOA: standard.2010.08.10

"For example,the number of hours that we consider to be congested has grown gradually over time."

VOA: standard.2010.07.26