These questions are designed to accompany the book "Half-Earth: Our Planet's Fight for Life" by Edward O. Wilson. In this New York Times Bestseller, E.O. Wilson urges us to preserve the Biodiversity of our planet. We are experiencing the mass extinction of many species of plants and animals and if we're not careful, we could face what is known as the "sixth extinction." The book is thought-provoking and an excellent book for all biologists, ecologists, naturalists, and practically anyone who cares about planet earth and its conservation.