A gene from a jellyfish is placed in a potato plant, making it light up whenever it needs watering. Rice plants are genetically transformed to produce vitamin A, preventing millions of African children from going blind. Plants are modified to produce plastic or pharmaceuticals. These are just a few of the touted benefits of genetically modified agriculture - the use of genetic engineering to alter crops for the benefit of mankind. But while proponents say this new technology has the potential to end world hunger and dramatically improve the quality of life of billions of people, others argue it constitutes the biggest threat to humanity since nuclear energy. Dubbing such genetically altered products "Frankenfoods," critics argue that the technology has been rushed to market. Scientists, they claim, are tampering with nature, risking potentially catastrophic and irreversible ecological disaster. The controversy has led Europe to ban the planting of genetically modified crops and to demand that all existing "GM" products be labeled. Will America follow suit? This FRONTLINE/NOVA special report examines the growing controversy over genetically modified foods.