Contents

24 January 1997
Vol 275, Issue 5299

About The Cover

Ten endangered species. An analysis of the geographic distribution of endangered species in the United States revealed that most are concentrated in a few regions of the country. However, the "hot spots" of potential extinction for different species groups rarely overlap. See 550 and the Perspective on 499. [Photos: Scrub mint (Dicerandra frutescens, low center), Thomas Eisner; others, U.S. Fish and Wildlife Service. Collage: Preston Morrighan]