Suppose you’re a basketball star who wants to build up old, tired muscles. Would you try gene doping? That’s injecting genes into muscles to make them stronger.
Or let’s say you wanted to have a baby. Would you genetically design your baby to look a certain way?
Neither is possible yet, but they’re not far off. Genetic engineering—making changes in genetic material—has already had a huge impact. It can do good things, but it also raises some hard questions.
