What Is Humanity's Greatest Challenge? (At Issue Series)

Books in this series focus a wide range of viewpoints onto a single controversial issue, providing in-depth perspectives from a variety of primary and secondary sources, including eyewitness accounts, scientific journals, government officials and others...Title: .What Is Humanity's Greatest Challenge?..Author: .Espejo, Roman (EDT)..Publisher: .Greenhaven Pr..Publication Date: .2010/01/29..Number of Pages: .108..Binding Type: .LIBRARY..Library of Congress: .2009039151