Each title in the highly acclaimed Opposing Viewpoints series explores a specific issue by placing expert opinions in a unique pro/con format; the viewpoints are selected from a wide range of highly respected and often hard-to-find publications.; Opposing Viewpoints: Birth Defects explores issues related to birth defects including what the common birth defects are, what causes birth defects, whether pregnant women should undergo screening for birth defects, and how birth defects should be addresse; "Each volume in the Opposing Viewpoints Series could serve as a model not only providing access to a wide diversity of opinions, but also stimulating readers to do further research for group discussion and individual interest. Both shrill and moderate, th"