Science 17 June 2011: 1382-1383.[DOI:10.1126/science.1205393]Describing how a convergence of factors has greatly expanded the challenges we face, Moss argues for the crucial importance of ethics in considerations of how to respond to anthropogenic climate change.A Perfect Moral Storm-  The Ethical Tragedy of Climate Changeby Stephen M. GardinerOxford University Press,New York, 2011. 507 pp. $35,£22.50. ISBN 9780195379440.

30th June 2011 • comment