25 November 2005
Vol 310, Issue 5752

About The Cover

Cover image expansion

COVER Drill head with piece of an ice core retrieved on 30 November 2002 at Dome Concordia Station during the European Project for Ice Coring in Antarctica. This ice is from a depth of 2873 meters and is about 491,000 years old. The ice core contains a continuous record of greenhouse gases over the past 650,000 years. See page 1317. [Photo: Laurent Augustin, LGGE Grenoble]