Experts at Penn State University have a simple answer: When the undesirable qualities outweigh the good qualities.

VOA: special.2010.08.10

The longer the wait,experts say, the more likely that the risks of treatment will outweigh the benefits.

VOA: special.2009.08.12

Experts at Penn State University have a simple answer: When its undesirable qualities outweigh its good qualities.

VOA: special.2009.05.26

But in general, the report says habitat losses outweigh the gains.

VOA: special.2010.05.25

Foreign Minister Shah Mahmood Qureshi told reporters he continues to believe the disadvantages of the strikes outweigh the advantages.

VOA: standard.2009.03.19

"Based on what we know now, we believe that the benefits of bisphosphonates outweigh potential risks."

VOA: standard.2010.03.14

But for the most part, she says negative developments far outweigh the positive ones.

VOA: standard.2009.09.16