Loretta Hall is the author of five nonfiction books and hundreds of magazine articles and reference book chapters. More information about her and her activities is available at AuthorHall.com. Her 2011 book, OUT OF THIS WORLD: NEW MEXICO & SPACE TRAVEL, describes eighty years of space-related research in New Mexico by relating the experiences of the adventurers who helped make space travel possible. Her website NMSpaceHistory.com features current events in New Mexico related to space exploration. Another of her books, UNDERGROUND BUILDINGS: MORE THAN MEETS THE EYE, showcases more than 100 modern examples in the United States and discusses the challenges and rewards of this unexpectedly common branch of architecture. Her web site SubsurfaceBuildings.com chronicles new projects and presents a list of civic and commercial examples in the United States. Loretta, who is certified as a Green Building Technical Professional, has spoken about the advantages and special challenges of earth-integrated architecture at several regional and national conferences, including the American Institute of Architects national convention and the National Building Museum lecture series.