Witnessing the beauty of synchronous fireflies in the Great Smoky Mountains inspired author Leigh Ann Henion to turn off her porch light and discover the vast natural world that thrives in the nighttime. In a world of growing light pollution, Henion’s book “Night Magic: Adventures Among Glowworms, Moon Gardens, and Other Marvels of the Dark” encourages us to turn off the lights and reconnect with the nocturnal life that exists right in our own backyards.