On the Appalachian Mountains above her home, a young mother discovers a beautiful and terrible marvel of nature. As the world around her is suddenly transformed by a seeming miracle, can the old certainties they have lived by for centuries remain unchallenged? ''Flight Behaviour'' is a captivating, topical and deeply human story touching on class, poverty and climate change. It is Barbara Kingsolver's most accessible novel yet, and explores the truths we live by, and the complexities that lie behind them.