The review discusses two books: "Extracellular Matrix Genes" and "Longevity, Senescence and the Genome." The first book is part of a series on the biology of the extracellular matrix. It provides a comprehensive review of the structure and function of genes coding for extracellular matrix molecules. The first chapter gives an overview of collagen genes, and subsequent chapters cover various collagen types, laminin, fibronectin, elastin, and other matrix components. The book is well-organized, with clear chapters, figures, and references, making it a valuable reference for those interested in the biology of the extracellular matrix. The second book, "Longevity, Senescence and the Genome," is a comprehensive survey of senescence in plants and animals. It covers topics such as the comparative biology of senescence, genomic mechanisms, and the factors influencing senescence. The book is well-structured, with outlines and summaries preceding each chapter, and includes a glossary, bibliography, and index. The author, Caleb E. Finch, presents a thorough analysis of senescence, including its genetic and evolutionary aspects. While the book is extensive, some criticisms are raised, such as the trivial distinction between senescence and aging and the inclusion of older studies. Despite these minor issues, the book is praised for its depth and breadth, making it a must-read for students and researchers in the field.The review discusses two books: "Extracellular Matrix Genes" and "Longevity, Senescence and the Genome." The first book is part of a series on the biology of the extracellular matrix. It provides a comprehensive review of the structure and function of genes coding for extracellular matrix molecules. The first chapter gives an overview of collagen genes, and subsequent chapters cover various collagen types, laminin, fibronectin, elastin, and other matrix components. The book is well-organized, with clear chapters, figures, and references, making it a valuable reference for those interested in the biology of the extracellular matrix. The second book, "Longevity, Senescence and the Genome," is a comprehensive survey of senescence in plants and animals. It covers topics such as the comparative biology of senescence, genomic mechanisms, and the factors influencing senescence. The book is well-structured, with outlines and summaries preceding each chapter, and includes a glossary, bibliography, and index. The author, Caleb E. Finch, presents a thorough analysis of senescence, including its genetic and evolutionary aspects. While the book is extensive, some criticisms are raised, such as the trivial distinction between senescence and aging and the inclusion of older studies. Despite these minor issues, the book is praised for its depth and breadth, making it a must-read for students and researchers in the field.