Parents want to do whatever is possible to make their children healthy. But what about going beyond health to enhancement, making kids bigger or smarter or more talented? Science is opening that door in a big way, and many ethicists debate where the line between health and enhancement should be. Kim Lawton has our story.

Read Kim Lawton's interview with Gregory Stock, CEO of Signum Biosciences and director of the Medicine, Technology, and Society Program at the UCLA School of Medicine.