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Corn is now a genetically
modified king, along with soybeans
and cotton. Over the past
ten years, crops engineered
to tolerate herbicides or resist
pests have become a good
chunk of the market. The edible
products go mainly for animal
feed. Environmentalists have
warned that genes could leak
from modified crops and create
superweeds. So far, that has
not happened.
Most of the cropland is in the Americas, where the public is relatively accepting of genetic modification. China may soon OK its first modified rice, which could become the largest GM crop for human consumption—and could cross borders illegally. Even without government approval, farmers eager for the GM edge have obtained seeds. “In 30 years,” says food policy expert Robert Paarlberg, “GM crops will be pervasive.” —Jim Giles
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