Contents

15 May 2015
Vol 348, Issue 6236

About The Cover

Cover image expansion

COVER A young woman in Havana checks her smartphone last month. Warmer ties between Cuba and the United States are expected to better integrate Cuban scientists into the global community and boost joint research on topics as diverse as the island's stunning coral reefs and the mosquito-borne chikungunya disease. See pages 735 and 746.
Photo: REUTERS/Enrique de la Osa