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All The Light We Cannot See

Even during the darkest night sky, all around us we’re surrounded by light. Science writer Bob Berman joins us to talk about the many kinds of light we cannot see – how they are crucial for life and how they can kill us if we’re not careful. His new book is called “Zapped: From Infrared to X-Rays, the Curious History of Invisible Light” (Little, Brown and Co.)