Old-age survival has considerably improved in the second half of the twentieth century. Why has such a substantial extension of human lifespan occurred? How lon... » 

Old-age survival has considerably improved in the second half of the twentieth century. Why has such a substantial extension of human lifespan occurred? How long can we live? In this book, these fundamental questions are explored by experts from such diverse fields as biology, medicine, epidemiology, demography, sociology, and mathematics. «