Louv is a journalist and author of books about the connections between family, nature and community, whose first book, “Last Child in the Woods: Saving Our Children From Nature-Deficit Disorder,” was translated into 10 languages and published in 15 countries. His newest, “The Nature Principle,” offers a new vision of the future in which our lives are as immersed in nature as they are in technology. Books will be available for purchase and signing. Seating is first-come, first-served. Doors open at 1:15 p.m. For more information contact Renée Reed.