Dr. Simon Gilroy of UW–Madison joins Debra Fitzgerald to reveal the fast, unseen sensory lives of plants – how they detect danger, send signals through their entire bodies within seconds, and respond intelligently without anything resembling a brain. Gilroy also takes us into orbit, where his NASA-partnered research explores how plants behave in space. If you’ve ever wondered whether your plants are, in their own way, listening – or if they feel pain – this conversation will change how you see the green world around you.