Mathematical Modeling can be compared to the Swiss Army knife: a multitude of useful tools to get the job done. Readers can explore applications of geometry to solve such questions as: How are long strands of DNA able to fit into tiny cells? In Mathematical Models for Society and Biology, Beltrami shows the relevance of mathematical modeling in social and life sciences, to readers who may have little background in Mathematics, Statistics and Engineering. This enlightening text relates undergraduate mathematics, including Geometry, Calculus and Linear Algebra, to engaging real-life problems in biology and modern society and shows how mathematical tools can be used to gain insight into these problems and provide effective solutions. Covering the material in a creative, non-threatening fashion, it uses a wealth of interesting examples pertaining to current social and biological issues. Central ideas appear in new contexts throughout the book, showing the general unity of the modeling process. The models are strikingly novel, most of which have not appeared elsewhere in book form. They are based on issues of real concern, and are not artificial. Through the relevance of the models to real life, the mathematics becomes not just figures and numbers, but the means to a more refined understanding of the world.