Co-publication with Yale University Press (USA). Discussion of the biological diversity of the earth. Demonstrates how the natural systems that surround us play an essential role in protecting our basic life-support systems. Describes the millions of species providing ecosystem services and explains how biological diversity opens the way for new medicines, construction materials and designs, and manufactured goods. Urges us to protect the biological wealth of the earth from destructive human activity. Includes reccommended reading and index. Beattie is director of the Commonwealth Key Centre for Biodiversity and Bioresources at Macquarie University. Turnbull is a research associate at Macquarie. Erlich is Bing Professor of Population Studies at Stanford University.

The Self-Organizing Economy In the last few years the concept of self-organizing systems—complex systems in which randomness and chaos seem spontaneously to evolve into unexpected order—has linked together researchers in many fields, from artificial intelligence to chemistry, from evolution to geology. Now leading economist Paul Krugman shows how principles that explain the growth of hurricanes and embryos can also explain the formation of cities and business cycles; how the same principles of “order from random growth” can explain the strangely simple rules that describe the sizes of earthquakes, meteorites, and metropolitan areas. Weaving together strands from many disciplines, from location theory to biology, The Self-Organizing Economy offers a surprising new view of how the economy structures itself in space and time.

The book treats two approaches to decision theory: (1) the normative, purporting to determine how a 'perfectly rational' actor ought to choose among available alternatives; (2) the descriptive, based on observations of how people actually choose in real life and in laboratory experiments. The mathematical tools used in the normative approach range from elementary algebra to matrix and differential equations. Sections on different levels can be studied independently. Special emphasis is made on 'offshoots' of both theories to cognitive psychology, theoretical biology, and philosophy.