Author of The Overstory Richard Powers returns with an arresting tale about the need to keep those we love safe. Theo Byrne is a promising young astrobiologist who has found a way to search for life on other planets dozens of light years away. He is also the widowed father of a most unusual nine-year-old, whose fears he soothes with inner voyages to fantastical worlds. Powers joins us live online to discuss his new book and his life in fiction.