With Halfpenny's Field Guide to Mammal Tracking anyone can be a nature detective, able to reconstruct the behavior of mammals from mice to moose. Based on field research, the book brings the amateur naturalist the latest information on animal gaits and the interpretation of scat.

How did a simple design error cause one of the great disasters of the 1980s - the collapse of the walkways at the Kansas City Hyatt Regency Hotel? What made the graceful and innovative Tacoma Narrows Bridge twist apart in a mild wind in 1940? How did an oversized waterlily inspire the magnificent Crystal Palace, the crowning achievement of Victorian architecture and engineering? These are some of the failures and successes that Henry Petroski, author of the acclaimed The Pencil, examines in this engaging, wonderfully literate book. More than a series of fascinating case studies, To Engineer is Human is a work that looks at our deepest notions of progress and perfection, tracing the fine connection between the quantifiable realm of science and the chaotic realities of everyday life.

In the spring of 1983 Terry Tempest Williams learned that her mother was dying of cancer. That same season, The Great Salt Lake began to rise to record heights, threatening the Bear River Migratory Bird Refuge and the herons, owls, and snowy egrets that Williams, a poet and naturalist, had come to gauge her life by. One event was nature at its most random, the other a by-product of rogue technology: Terry's mother, and Terry herself, had been exposed to the fallout of atomic bomb tests in the 1950s. As it interweaves these narratives of dying and accommodation, Refuge transforms tragedy into a document of renewal and spiritual grace, resulting in a work that has become a classic.

Ranging from an autobiographical tour-de-force that describes a childhood spent with an alcoholic father to Looking at Women, a reflection on male yearning and confusion, to a look at the place--or absence--of nature in recent American fiction.

Pieces of the Frame is a gathering of memorable writings by one of the greatest journalists and storytellers of our time. They take the reader from the backwoods roads of Georgia, to the high altitude of Ruidoso Downs in New Mexico; from the social decay of Atlantic City, to Scotland, where a pilgrimage for art's sake leads to a surprising encounter with history on a hilltop with a view of a fifth of the entire country. McPhee's writing is more than informative; these are stories, artful and full of character, that make compelling reading. They play with and against one another, so that Pieces of the Frame is distinguished as much by its unity as by its variety. Subjects familiar to McPhee's readers--sports, Scotland, conservation--are treated here with intimacy and a sense of the writer at work.

First published over 40 years ago, this work has achieved the status of a classic among introductory texts on mechanics. Den Hartog is known for his lively, discursive and often witty presentations of all the fundamental material of both statics and dynamics (and considerable more advanced material) in new, original ways that provide students with insights into mechanical relationships that other books do not always succeed in conveying. On the other hand, the work is so replete with engineering applications and actual design problems that it is as valuable as a reference to the practicing engineer as it is as a text or refresher for the general engineering student.
Mechanics is not a heavy book, despite the amount of material it covers and the clarity and exactness with which it treats this material. It is undoubtedly one of the most readable texts in the field. More than 550 drawings and diagrams in the regular text and in the highly praised 112-page section of problems and answers further contribute to its lucidity and value. The emphasis is consistently on illuminating fundamental principles and in showing how they are embodied in a high number of real engineering and design problems concerning trusses, loaded cables, beams, jacks, hoists, brakes, cantilevers, springs, balances, pendulums, projectiles, cranks, linkages, propellers, turbines, fly ball engine governors, hydraulic couplings, anti-roll devices, gyroscopes, and hundreds of other mechanical systems and devices.
Chapters cover Discrete Coplanar Forces, Conditions of Equilibrium, Distributed Forces, Trusses and Cables, Beams, Friction, Space Forces, The Method of Work, Kinematics of a Point, Dynamics of a Particle, Kinematics of Plane Motion, Moments of Inertia, Dynamics of Plane Motion, Work and Energy, Impulse and Momentum, Relative Motion, and Gyroscopes. Particularly in the last two chapters, Den Hartog provides advanced material not usual in introductory texts. Very thoroughly recommended to all those anxious to improve their real understanding of the principles of mechanics. -- Mechanical World.
Index. List of equations. 334 problems, all with answers. Over 550 diagrams and drawings.

These are notions so basic to our view of life that we take them for granted. But in the seventeenth century they were revolutionary, heretical, even dangerous to the men who formed them. Culture, religion, and science had intertwined over the centuries to create a world view based on a stationary earth. Indeed, if the earth moved, would not birds be blown off the trees and would not an object thrown straight up come down far away?

Then came the Renaissance and with it Copernicus, Galileo, Kepler, Huygens, and Newton: giants who courageously remade the world into an earth which actually moves 100,000 feet a second while revolving 1,000 miles an hour around an object 93,000,000 miles away. And yet birds perch unruffled and an apple will fall straight down.

All of this we think we know. But how well do we know it? In the twenty-five years since its first publication, The Birth of a New Physics has become a classic in the history of science. Here expanded by more than one-third and fully updated, it not only offers us the best account of the greatest scientific revolution but also tells us how we can know we live in a dynamic universe.

Einstein presents his views on the special and general theory of relativity and the universe as a whole.

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