Few topics have inspired as much international furor and misinformation as the development and distribution of genetically altered foods. For thousands of years, farmers have bred crops for their resistance to disease, productivity, and nutritional value; and over the past century, scientists have used increasingly more sophisticated methods for modifying them at the genetic level. But only since the 1970s have advances in biotechnology (or gene-splicing to be more precise) upped the ante, with the promise of dramatically improved agricultural products--and public resistance far out of...