### Ever longer life

Our germline cells (eggs and sperm) are already immortal. What if the rest of the cells of our body could acquire the same ability? Tissue by tissue, one degenerative disease after another, it could gradually happen in the course of one or two human generations. When it does happen, what we mean by "generation" changes completely.

Thanks to Proposition 71, which funds embryonic stem cell research, California is now the frontier of the key technology for rejuvenating human cells, tissues, and organs; for not just treating but curing lethal diseases. Michael West, founder of Geron and Advanced Cell Technology, has been in the thick of regenerative biomedicine since the early '90s.

As soon as normal human life spans begin to increase beyond 100 years, on purpose, everything we think and do will change.

Will it really happen? If so, how soon?

Michael West has been in the thick of cures for human aging since his work on telomerase and the founding of Geron in the 1990s. Now, as chair and CEO of Advanced Cell Technology, he is a leader in the use of embryonic stem cells and cloning for the regeneration of aging tissue and organs. He is author of _The Immortal Cell: One Scientist 's Quest to Solve the Mystery of Human Aging_.