The two cotton-growing centers could hardly differ more. But small farms in India and industrial fields in Arizona both provide case studies that show the bright side of a widespread genetically engineered crop.
The crop, Bt cotton, has borrowed a toxin gene from the bacterium Bacillus thuringiensis to make its own pesticide. According to a report in the Feb. 7 Science, Bt cotton has raised yields some 80 percent on small farm plots in India compared with neighboring plots growing conventional cotton. It's the first time th