These books provide a range of opinions on a social issue; each volume focuses on a specific issue and offers a variety of perspectives, e.g., eyewitness accounts, governmental views, scientific analysis, newspaper accounts, to illuminate the issue.; This addition to the At Issue series examines the facts and controversies surrounding mass extinctions theories. The title explores the signs potentially pointing to mass extinctions, the possibility of specific extinctions for amphibians, bees, plants, a; Greenhaven Press's At Issue series provides a wide range of opinions on individual social issues. Enhancing critical thinking skills, each At Issue volume is an excellent research tool to help readers understand current social issues and prepare reports.