Contents

11 August 2006
Vol 313, Issue 5788

About The Cover

Cover image expansion

COVER During the evolution of life, the ability to migrate and disperse became ever more sophisticated, enabling journeys thousands of kilometers long. Such travels shape a species' life history, which in turn shapes the ecology of the places visited. A special section beginning on page 775 considers some of the advances in our understanding of life on the move. Image: Carin Cain