To their surprise, Mexican authorities have discovered that some of the country’s native corn varieties have been contaminated by genetically engineered DNA. The finding is particularly troubling because Mexico has not approved the commercial planting of genetically modified corn. Moreover, the contaminated seeds were found in an area considered to be the world’s repository of corn diversity — the kind of place scientists had hoped would help preserve genetic diversity in the age of Frankenfood. Greenpeace is now asking Mexico to ban the import of genetically modified corn.
