And because the key component of solar cells is an expensive, highly purified form of silicon, there's a real economic benefit to this design.

VOA: standard.2010.02.19

On the subject of North Korea, ElBaradei said there are two key issues: "One is its obsession with security and the possibility of regime change by the U.S.

VOA: standard.2009.11.04

But still,there is evidence that HIV is growing among key populations.

VOA: standard.2010.07.07

And there's a big divide between the view of the United States and some of its key allies and the rest of the world, in particular in the developing world."

VOA: standard.2010.04.06

They make sure key elements in the plot are there.

VOA: standard.2010.05.07

In nearby Saudi Arabia, which is an important player as well as a key moral force in the Arab and Islamic world, there appeared to be a quiet sense of enjoyment over the news.

VOA: standard.2009.10.09

In a statement, the Democratic chairmen of three key House committees said while there are clear differences between House and Senate bills, both will bring fundamental health care coverage to millions who are currently uninsured.

VOA: standard.2009.12.25