For thousands of years, humans have practiced selective breeding -- pairing the beefiest bull with the healthiest heifers to start a new herd. That concept was refined to develop plant hybridization and artificial insemination. Today, we've got tastier corn on sturdier stalks, bigger turkeys and meatier cattle.
Now comes an Atlantic salmon genetically engineered to grow twice as fast as a regular salmon. If U.S. regulators approve it, the fish would be the first such scientifically altered animal to reach the dinner plate.
Scientists
