Aubrey de Grey is the co-founder and chief science officer of the SENS Research Foundation, an organization dedicated to the study of radical life extension. He is based in Cambridge, U.K., and Mountain View, Calif.

Hamid Mavani is an associate professor of Islamic studies at Bayan Claremont Islamic Graduate School in Clarement, Calif. He has written about whether Islam is compatible with transhumanism.

Newton Lee is chair of the California Transhumanist Party and president of the Institute for Education, Research and Scholarships.

Brian Green is the director of technology ethics at the Markkula Center for Applied Ethics at Santa Clara University. He studies how emerging technologies, including artificial intelligence, affect human life.

John K. Davis is a professor of philosophy at California State University, Fullerton. He is the author of New Methuselahs: The Ethics of Life Extension. 

Christopher Key Chapple is a professor of Indic and comparative theology at Loyola Marymount University in Los Angeles. He contributed chapters on Hinduism and Jainism to the 2014 book Transhumanism and the Body: The World Religions Speak and has written on what Jainism has to offer to end-of-life health care debates.

Victoria Loorz is pastor of the Church of the Wild in Oak View, Calif., a faith community that meets in the wilderness and focuses on encountering God through nature.

The Rev. Ambrose Carroll is co-founder of Green the Church and pastor of The Church by the Side of the Road in Berkeley, Calif.

Nana Firman is Senior Ambassador for GreenFaith, an interfaith organization that promotes environmental stewardship. She previously worked with the World Wildlife Fund in Indonesia.