Alcor Life Extension Foundation

Alcor Life Extension Foundation is a cryonics organization founded in 1972 that preserves deceased members at ultra-low temperatures (liquid nitrogen, −196 °C) with the goal of future medical revival. The organization maintains cryogenic storage facilities in Arizona and offers membership-based preservation services for whole-body and neuro (brain-only) cryopreservation. Alcor is the largest cryonics provider by membership and has pioneered protocols for stabilization, perfusion, and long-term storage. The organization operates as a nonprofit and has been central to cryonics research and advocacy, though the scientific feasibility of revival remains highly speculative and contested by mainstream medicine.