29 May 2009
Vol 324, Issue 5931

About The Cover

Cover image expansion

COVER A close-up of the tropical coral Favia speciosa. The position and age of related fossil corals have been used to constrain the timing of sea-level rise during the penultimate deglacial period. The timing of past sea-level change, relative to potential forcings, can help determine the mechanisms of climate change and the speed of ice sheet collapse. See page 1186 Photo: Getty Images