Since the dawn of time, humans have worshipped the sun. And with good reason. Our biology is set up to work in partnership with it. From our sleep cycles to our immune systems and our mental health, access to sunlight is crucial for living a happy and fulfilling life. Our bodies and our brains are designed to function during the day and rest at night. But as more of us move into light-polluted cities, spending our days in dim offices and our evenings watching brightly lit screens, we are in danger of losing something vital: our connection to the star that gave us life. It's a loss that could have far-reaching consequences for our health. This week, I sit down with award-winning journalist, Linda Geddes, to discuss just what those health implications are. We talk about the concept of night owls and larks and examine whether getting a lie in at the weekend is really as restorative as it sounds. We discuss jet lag and Linda shares the fascinating findings of her research in this area – including her own experiment of getting rid of light at night in her own home. Finally, we discuss what we can all do to get a little more light into our days. If you are listening to this podcast during the day, you won’t be able to resist the urge of going outside to soak up some natural light!