2034.
Deep beneath the ruins of post-apocalyptic Moscow, in the dilapidated subway tunnels, the remnants of humanity struggle to survive. Hordes of mutants storm last refuge of survivors.

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This is the most respected and authoritative college textbook available on human sexuality. Written in a direct, non-judgmental manner, this edition of OUR SEXUALITY has been thoroughly and carefully updated to reflect the most current research findings. It is the first college text to bring cutting-edge and in-depth emphasis on the impact of politics on sexuality. Crooks and Baur keep you interested with the most exciting, emerging research and coverage, and focus on strengthening healthy communication among partners. The authors also have revised their overall coverage on maintaining a responsible and healthy sexual relationship, with greater attention to diversity and inclusiveness.

This richly illustrated and clearly written undergraduate textbook captures the excitement and beauty of geometry. The approach is that of Klein in his Erlangen programme: a geometry is a space together with a set of transformations of the space. The authors explore various geometries: affine, projective, inversive, hyperbolic and elliptic. In each case they carefully explain the key results and discuss the relationships between the geometries. New features in this second edition include concise end-of-chapter summaries to aid student revision, a list of further reading and a list of special symbols. The authors have also revised many of the end-of-chapter exercises to make them more challenging and to include some interesting new results.