Can certain perfumes help Alzheimer's patients recall memories? Could implanting a robotic eye help a blind man see? Berkeley journalist Kara Platoni explores these questions in her new book, "We Have the Technology: How Biohackers, Foodies, Physicians, and Scientists Are Transforming Human Perception, One Sense at a Time." She joins us to talk about cutting-edge perceptual technology and what it means for our evolution.

• More: Kara Platoni's website