The novel "Animal Dreams" was also published in 1990, followed by "Pigs in Heaven", the sequel to "The Bean Trees", in 1993. "The Poisonwood Bible", published in 1998, is one of her best known works; it chronicles the lives of the wife and daughters of a Baptist missionary on a Christian mission in Africa. Although the setting of the novel is somewhat similar to Kingsolver's own childhood trip to the then Republic of Congo, the novel is not autobiographical. Her next novel, published in 2000, was "Prodigal Summer", set in southern Appalachia. "The Lacuna" was published in 2009; her next to most recent novel, entitled "Flight Behavior", was published in 2012. It explores environmental themes and highlights the potential effects of global warming on the monarch butterfly. Her most recent novel, entitled "Unsheltered", was published in 2018 and follows two families in Vineland, New Jersey with one in the 1800s and the other in the aftermath of Hurricane Sandy.