Zuccarelli examines a collection of scientific observations that may provide a foundation for reconciling Eden with reality. These include recent biochemical, genetic and physiological studies that bear on how long individual organisms may live. From these observations we may consider the possibility of indefinitely extended life. Then we will describe concepts that may undergird a planetary biosphere in which undying beings might live. Finally, using what we know or can deduce, we will attempt to approximate the biological and planetary circumstances that existed on the original Earth.