Bob Fosbury, an honorary professor at University College London and an Emeritus Astronomer at the European Southern Observatory, brings his astrophysics expertise to explore the fascinating interactions between light and human health. He discusses how near-infrared light is vital for mitochondrial function and overall health. Bob critiques modern lighting practices that obscure natural light's benefits, emphasizing the need for architectural designs that embrace sunlight. His insights reveal the profound impact of light on biological evolution and the necessity for a holistic understanding of health and wellness.