Much current research on the biology of senescence is on cell lines,
nematodes, or fruit flies, which may be only of peripheral relevance to
the problems encountered in human senescence. Human Senescence reviews
the evolutionary biology of human senescence and life span, and
the evolutionarily recent development of late-life survival. In examining
how human patterns of and variability in growth and development have
altered later life survival probabilities and competencies, how survival
during mid-life contributes to senescent dysfunction and alteration, and
the possibilities of further extending human life span, it gives a better understanding
of howhumans came to senesce as slowly as they do. Bringing