Ask Rebecca Skloot what she knows about immortality - and the inevitable costs - when she appears at Barnes & Noble next week in promotion of her new book, "The Immortal Life of Henrietta Lacks."

Ask Rebecca Skloot what she knows about immortality - and the inevitable costs - when she appears at Barnes & Noble next week in promotion of her new book, "The Immortal Life of Henrietta Lacks." Nearly a decade in the making, Skloot's groundbreaking work traces the life of Lacks, a poor African-American tobacco farmer. After her death from cancer, a sample of tissue taken without her consent ended up being a holy grail in the biology world, making Lacks "the most important woman in medical history." A tour de force of race, science, history and bioethics, Skloot's exhaustive research is sure to highlight the stakes over the ongoing medical care debate and beyond.