On our last episode, Dan spoke with Dr. John Barentine, the director for public policy for the International Dark Sky Association about preserving our night skies and about  constellations and their attendant lore. On this episode, Dan speaks with Paul Bogard, author of The End of Night, Searching for Darkness in an Age of Artificial Light. It is a catalogue of adventures Paul took to some of the brightest and darkest skies on the planet, from the city of Paris, to the island of Sark, where there is not a single automobile or street light. Paul also visited several national parks as well, taking readers on a journey that anyone can follow. Paul also shares with us the wisdom he gleaned about the healthful benefits of natural darkness and why everyone should be concerned about preserving and cherishing it. You can find out more about Paul's work here.