AllMovie

Part 2 traces the scientific and entrepreuneurial development of genetic engineering since the first successful gene-splicing experiments in 1973, and the attendant controversy. Scientists recall the race to make genetically engineered insulin and efforts to modify plants to improve their yield and make them disease-resistant. Says genetic engineer Rob Horsch: "In 2 billion years of evolution, just the bare surface has been scratched of what's possible with the genetic code of DNA."