Organizations

• Brain Preservation Foundation
• 21st Century Medicine
• Alcor Life Extension Foundation
• Cryonics Institute
• OregonCryo
• KrioRus

Discussion groups

• Effective Altruism & Life Extension (Facebook group)
• Cryonics (subreddit)

External links

• Cryonics wiki
• http://www.evidencebasedcryonics.org/tag/bryan-caplan/ might be a place to start
• Tim Urban: http://waitbutwhy.com/2016/03/cryonics.html
• Wikipedia article
• Timeline of brain preservation
• The book The Ethics of Cryonics: Is it Immoral to be Immortal? (also see the podcast) covers various common objections to cryonics