In the past few decades modern science has cloned sheep, mapped the human genome, and made tremendous advances in the average lifespan. The average age in the United States has gone from 67 to 77 in the past 50 years and it doesn’t seem to be slowing down. In fact, many experts believe the rate of research is getting more fast-paced than ever. Humans are reaching a stage where we may be able to live forever and one landmark book, Sapiens,...