Let’s say you’re a basketball star who wants your muscles to feel younger. 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 hard questions.
