Author and essayist Priya Basi, the co-founder of Authors for Peace, reflects on hospitality and the roles of host and guest beyond the act of feeding someone. Environmentalist Paul Greenberg examines his relationship with his father and fishing. Environment lawyer Thomas Linzey looks at the rights of water from the point of view of water itself. Journalist Lucy Jones reflects on how the return to nature aids both the body and mind. Filmmaker Louie Schwartzberg sets the stage for a story of rebirth, rejuvenation, and regeneration in his documentary "Fantastic Fungi."