Former Speaker of the House Newt Gingrich wrote Rediscovering God in America: Reflections on the Role of Faith in Our Nation’s History and Future (Integrity, 2006). Gingrich has a doctorate in history.

Brooke Allen, a cultural and literary critic, is the author of Moral Minority: Our Skeptical Founding Fathers. Allen joined the faculty at Vermont’s Bennington College in 2011.

David L. Holmes, who lived for some years in the home of James Monroe, teaches religious studies at the College of William and Mary in Williamsburg, Va.

Read a May 2005 LA Yoga Magazine story on the greening of yoga.

Read a Yoga Journal story reporting the results of its Yoga in America survey.

The Green Yoga Association is a network of yoga practitioners, teachers and businesses who believe that taking care of the planet is essential to yoga practice. It’s based in Emeryville, Calif. It posts a directory of more than 100 “green” yoga studios and teachers all over the country.

Georg Feuerstein and his wife, Brenda, are the authors of Green Yoga. He studies philosophy and history and authored over 30 books on mysticism, Yoga, Tantra, and Hinduism. Georg created several learning courses made available through Traditional Yoga Studies, his wife’s Canadian educational company.

Swasti Bhattacharyya is associate professor of philosophy and religion at Buena Vista University in Storm Lake, Iowa. She specializes in environmental ethics, comparative religious ethics, peace studies, Buddhism, Hinduism, Jainism, ancient Judaism and early Christianity.

Christians for Comprehensive Immigration Reform is a campaign of Sojourners that educates and mobilizes Christian organizations, churches, and leaders from across the theological and political spectrum to advocate for comprehensive U.S. immigration reform and compassionate immigration policies at the state level.