Pondering "What It Means to Be Human"

People in pain write to Jennifer Doudna. They have a congenital illness. Or they have a sick child. Or they carry the gene for Huntington’s disease or some other dreadful time bomb wired through every cell in their body. They know that Doudna helped invent an extraordinary new gene-editing technology, known as CRISPR.

But they don’t all seek her help. One woman, the mother of a child with Down syndrome, explained: “I love my child and wouldn’t change him. There’s something about him that’s so special. He’s so loving in a way that’s unique to him. I wouldn’t change it.”