Scott Zimmerman is a mechanical engineer whose life took a sharp turn when he started to think about the relationship indoor lighting, biology, and solar radiation. He believes that near-infrared light, an invisible component of sunlight from ~800 to 3,000 micrometer wavelengths, is vital for human health. Unfortunately, these are the exact frequencies that our indoor lights and digital devices are incapable of producing. Zimmerman believes that the shift away from incandescent lighting inside of homes has contributes massively to wide-spread hormonal issues in modern population. His mechanism is that our skin, the largest endocrine gland in the universe, is actually a light harvesting organ that uses all the components of light to produce everything from sex hormones to vitamin D. We talk to him about the effect of sunlight on the human body, how he transitioned from mechanical engineering to making lightbulbs, the active harm of blue light, and much more.Tell us your thoughts in the comments!!!