The new third edition of this bestselling book remains focused on being the best teaching tool possible for students taking their first course in ecology. Revised and updated, the book features a new chapter on Behavioral Ecology, an exciting and growing subfield of ecology, and new Analyzing Data exercises in which students work with real data....

A fascinating and incisive look at a growing population: women who by choice or by chance have remained childless. Thanks in part to birth control, delayed marriages, and the emergence of two-career couples, 42% of the adult female population is childless, representing the fastest-growing demographic group to emerge in decades....