Anti-doping officials say they want to protect the integrity of sports by guaranteeing what they call a level playing field.

VOA: special.2011.04.12

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

And they will study whether it is involving in controlling sleep quantity alone, or also what scientists call the "wakefulness-behavioral drive."

VOA: special.2009.08.26

The joey -- what Australians call a baby kangaroo stays in this built-in baby carrier until it can survive independently.

VOA: special.2009.05.25

And scientists are reporting this week on what they call the "indirect costs" of a virus-resistance gene in Cucurbita.

VOA: special.2009.10.27

But President Obama made it clear Monday that he wants to limit the intervention in what some now call "Government Motors."

VOA: special.2009.06.05

As a result, "in loco parentis" has been replaced by what some administrators call a "partnership" between the school and the family.

VOA: special.2009.07.09

In the United States,for example, more than twenty thousand teams are preparing for what organizers call memory walks.

VOA: special.2009.09.15

Louisiana is also one of the world's largest producers of what some call "the most important fish you've never heard of": menhaden.

VOA: special.2010.05.04

It asks major polluting countries to voluntarily reduce gases linked to what scientists call the greenhouse effect.

VOA: special.2010.01.19

The glacier left huge amounts of soil and rocks in what scientists call the Valley Heads Moraine.

VOA: special.2009.01.05

Researchers believe the increase in heart rate might demonstrate what they call the fight or flight response.

VOA: special.2009.08.18

But now researchers led by Doctor Jonathan Winickoff at MassGeneral Hospital for Children in Boston are warning about what they call "third-hand smoke."

VOA: special.2009.01.07

"We use what we call good shoes and a good hat, and that would be a solid foundation and a really good roof."

VOA: special.2009.10.05