Contents

13 June 2003
Vol 300, Issue 5626

About The Cover

Cover image expansion

COVER As we learn more about the past and present diversity of life on Earth, we are gaining insights into the urgency of finding new ways to preserve this diversity. An Editorial, Viewpoints, News, and special features can be found in this issue and in Science's STKE. [Photo: Ric Ergenbright/CORBIS] 1691