Sharks play an important role in the food chain.

VOA: special.2009.04.03

That study asked them whether a patient's age and other illnesses might play a role in not recommending chemotherapy after surgery.

VOA: standard.2010.03.18

president has done so. He told the council that the United Nations has a "pivotal role to play" in preventing a nuclear crisis.

VOA: standard.2009.09.24

Finally,there's a section that talks more about the unsolved mysteries and particularly the role that the Large Hadron Collider would play in that."

VOA: standard.2010.03.05

Older mothers are known to face increased risks for having children with genetic disorders, and genes are thought to play a role in the entire autism spectrum.

VOA: standard.2010.02.10

"They play a key role in helping stabilize Afghanistan and Pakistan.

VOA: standard.2009.08.31

Former footballer and Deputy General-Secretary of the Union, Thulaganyo Gao Shubelwe, says footballers can play a positive role in conveying the safe-sex message because of the aura surrounding them.

VOA: standard.2010.05.29

And finally,new medical devices play a role in heart health.

VOA: standard.2010.06.04

The Boston University researcher says this kind of analysis could play a role, not just in predicting who will live longest, but in actually helping people live longer and healthier lives.

VOA: standard.2010.07.14

She says the pictures could play a role but one would have to be in a predisposed state then one may see the morbid murals with very different eyes, which could adversely affect someone.

VOA: standard.2010.07.10

At the ASEAN summit in October, Burma's prime minister indicated they could lift some restrictions against the detained Nobel prize winner and allow her to play a role in the country's political reconciliation if she behaves.

VOA: standard.2009.11.02

"Because cardiovascular death is the number one cause of death in the world, not just in developed countries, but throughout the world, the role that air pollutants play on this has a tremendous effect on overall world mortality."

VOA: standard.2010.08.04

Though funding from the IMF,the World Bank, the United States and other donors has made it possible to subsidize treatment and prevention methods in Africa, Dr.Rwagacondo says that local governments also have a key role to play in mobilizing their populations and eradicating malaria in the long term.

VOA: standard.2009.04.25

"We are not backing away. We are going full steam ahead with our programs in Iran and across the region,again in order to create that space for civil societies to actually play the proper role that we would all understand in building more accountable democratic governing institutions,".

VOA: standard.2009.10.28