The latest edition of Robert Arking's seminal text on the biology of aging takes on an extended title, since the field of gerontology has advanced to a point at which it is possible to separate the topic into two implicit subsets, longevity and aging. This multi-faceted description of the biology of aging guides the reader through increasingly interesting answers to seven fundamental questions: What is aging? Why do we age? What mechanisms support extended longevity? What determines the onset of senescence? What is the mechanistic basis of senescence? Why do humans live so long? And lastly, what pro-longevity societal interventions are needed? Inevitably, humans will age but there is no reason why we must suffer from age-related diseases. Aging and longevity are dependent on both genes and social environment. Our biology does not forbid the modulation of aging. What we really want to know is not so much about the biology of aging - which is basically a degenerative process - but rather about biological processes underlying the long term maintenance of our health. New chapters incorporate the latest developments in the field of gerontology. Research done since the previous edition was published has given us insight into how we may stay healthier longer.

Robert Arking's Biology of Aging, 3rd edition, is an introductory text to the biology of aging which gives advanced undergraduate and graduate students a thorough review of the entire field. His prior two editions have also served admirably as a reference text for clinicians and scientists. This new edition captures the extraordinary recent advances in our knowledge of the ultimate and proximal mechanisms underlying the phenomenon of aging. As a result, six important conceptual changes are included here:
DT Clarified distinctions between the biological mechanisms involved in longevity determination and those involved in senescent processes. DT A new conceptual framework around which we can organize all the new facts about aging. This will assist readers to make sense of the information and use the data to form their own ideas. DT Increased knowledge of aging cells has lead to new ideas on how a cell transits from a healthy state to a senescent state, while still allowing for high levels of intra- and inter-specific variability. DT Discussion of senescent mechanisms assists the reader to understand that aging is a non-programmatic loss of function, likely arising from the loss of regulatory signals, and so is modifiable in the laboratory. DT Because the standard evolutionary story does not fully explain the evolution of social organisms, this edition also includes recent work dealing with intergenerational resource transfers. DT Lastly, if aging mechanisms are plastic, then the demand to move these anti-aging interventions into the human arena will inevitably grow. A discussion of the biological and ethical arguments on both sides of the question frames the question in anappropriate manner.
The mass of data related to aging is summarized into fifteen focused chapters, each dealing with some particular aspect of the problem. The last two chapters integrate all this material into a coherent view of how the relevant biological processes change over the life span. This view is expressed in two non-technical figures (you might say that the whole book exists to fully support Figs 9-4 & 14-9), whose meanings are elucidated as the reader progresses through the book.

In search of holistic Christian witness, missionaries have increasingly sought to take into account all the dimensions of people's cultural and religious lives-including their songs, dances, dramatic performances, storytelling, and visual arts. Missiologists, educators, and practitioners are cultivating new approaches for integrating the arts into mission praxis and celebrating creativity within local communities. And in an increasingly globalized and divided world, peacemaking must incorporate the use of artistic expressions to create understanding among peoples of diverse faiths. As Christians in all nations encounter members of other religions, how do they witness among these neighbors while respecting their distinct traditions? Building on sessions at the 2018 Missiology Lectures at Fuller Seminary, this book explores the crucial role of the arts in helping people from different cultures and faiths get caught up in the gospel story. Scholars and practitioners from throughout the world present historical and contemporary case studies and analyses. Their subjects include the use of Christian songs during the Liberian civil war and Ebola crisis, social critiques in contemporary Chinese art, interreligious dialogue through choir music in Germany, aesthetic practices of the Zapatista movement in Chiapas, Mexico, and how hip-hop music empowers urban young people in globalizing Mozambique. These essays foster a conversation about the work that missiologists, art critics, ethnodoxologists, and theologians can do together to help guide church leaders in promoting interfaith and intercultural relationships. While honestly identifying weaknesses in the church's practice, the contributors call all Christians to understand the power of art for expressing cultural and religious identity, opening spaces for transformative encounters, bridging divides, and resisting injustice. Missiological Engagements charts interdisciplinary and innovative trajectories in the history, theology, and practice of Christian mission, featuring contributions by leading thinkers from both the Euro-American West and the majority world whose missiological scholarship bridges church, academy, and society.