With over 20 years of leadership experience in non-profit ministry organizations, I have served as a pastor, teacher, author, and speaker on topics ranging from science and history to archaeology. I speak at conferences and events across the country, engaging with diverse audiences in churches, schools, and universities.I also have extensive experience leading outdoor expeditions and international tours, including through museums and national parks. Having spent over 1,000 days teaching history and geology at the Grand Canyon, I’ve led hundreds of tours, including many river expeditions through the canyon along the Colorado River.