Becher, Richey (writers, editors, researchers), and 41 contributors compiled a second edition of their biographical reference work on 390 American environmental leaders past and present. The two-volume edition includes new and expanded material, recent developments in earth science, policy making, environmental activism, and the arts. It also includes 64 new essays and new key documents which include articles, book excerpts, and speeches by authorities in the field, in addition to a new timeline that list important firsts in areas critical to the environment and its protection. The reference is arranged in an encyclopedic format. The set will be a useful addition to reference libraries and environmental studies departments. It was previously published by ABC-CLIO in 2000, and this edition is Grey House Publishing's first. Annotation ©2009 Book News, Inc., Portland, OR (booknews.com) Read Less