J Matthew SleethMatthew Sleeth, MD, a former emergency-room physician and chief of hospital medical staff, resigned from his position to teach, preach, and write about the biblical call to be good stewards of God's creation. A highly sought after speaker, he as spoken at more than a thousand churches, campuses, and events. He is the executive director of Blessed Earth and the author of several books and church curricula. Read More Read Less