Scientists agree that musical instruments are a sign of fully modern behavior and a complex form of communication.

VOA: special.2009.08.18

A navigator had to use complex observing instruments to note the position of the moon and stars.

VOA: special.2010.07.14

That sounds simple. But the issue is a complex mix of technical,business, political and legal questions.

VOA: special.2009.09.25

A new book about America's public universities explores the complex causes of the high dropout rate.

VOA: special.2009.09.10

Fugue is a series of opposing melodies used to create a complex effect.

VOA: special.2009.03.01

"It's a tremendously complex patchwork of initiatives that are now being sewn together by Western military commanders and Afghan political figures,"

VOA: standard.2009.06.15

The awards were the result of a complex arbitration that was part of a peace agreement that ended the conflict.

VOA: standard.2009.08.20

Flavor aside, scientists have recognized it as a complex blend of chemical compounds with potential health effects, both good and bad.

VOA: standard.2010.06.30

In 2007, after a fire destroyed an apartment complex housing dozens of immigrant families, only one family accepted help from MCC.

VOA: standard.2010.07.22

But in addition to their high cost - three times that of a Humvee - the M-ATVs are mechanically complex.

VOA: standard.2010.08.01

It is the final step in the complex production of batik, a technique that uses wax to create elaborate designs on fabric.

VOA: standard.2010.04.14

Two recent public opinion polls offer a complex view of how Americans see the conflict in Afghanistan.

VOA: standard.2009.10.09

The U.S.military says four of its service members have died in what it calls a "complex attack" in the eastern part of Afghanistan.

VOA: standard.2009.09.09

It is a complex system of public and private insurance plans, regulated by the government but still giving individuals a good deal of choice.

VOA: standard.2009.09.28