First Proof that Evolution Can Work Faster Than Genetic Engineering

For years, farmers have been growing genetically-engineered cotton plants that exude an insecticide known as Bt. But now, a pest called the bollworm moth has evolved a resistance to Bt -- and the altered bugs have already spread across part of the southern United States. This is the first-known example of bugs evolving resistance to an insecticide in the wild. It proves that natural selection can outrun genetic engineering in terms of its ability to transform a species quickly.