• Immortality entry trong Internet Encyclopedia of Philosophy
• Scientists are Close to Finding a Way to be Immortal
• Turritopsis nutricula:Palscience Meet The Only Immortal Species on Planet Earth
• The Methuselah Foundation Aubrey de Grey's non-profit organization dedicated to finding a cure for aging
• KurzweilAI.net Ray Kurzweil resource site
• BiologicalGerontology.com Chris Smelick's Biogerontology site
• Vitae Institute Chris Smelick's non-profit organization
• ELPIs Theory Marios Kyriazis' theory of human biological immortality
• Immortality Institute Scientific and sociological discussions, activism, research

Religious and spiritual prospects for immortality

• "Death and Immortality" Dictionary of the History of Ideas, etext at the University of Virginia Library
• "Immortality" Immortality – What Will Eternal Life Be Like?
• The Immortality of the Soul and the Resurrection of the Body Lecture by Heinrich J. Vogel
• An Essay on the Scriptural Doctrine of Immortality by James Challis
• Eternity: Christ’s Return, Chiliasm, Resurrection of the Dead, Judgment, Hell, Luther on Eternity, Heaven J.P. Meyer, The Northwestern Lutheran, ngày 22 tháng 8 năm 1954, Vol. 41, # 17 to ngày 14 tháng 4 năm 1957, Vol. 44, #8
• "How you Can Have Eternal Life" Jack Graham, PowerPoint Ministries, Christianity.com
• Got Eternal Life? Got Questions Ministries
• Immortality Taoist essay, personaltao.com
• The Trial to Conquer Death Ancient Scientific Yoga – The First Atom's Final Attempt
• A review by Dr. Peter Fenwick of the book Human Immortality by Mohammad Samir Hossain