A collection of links debunking the myth that there is no consensus in the scientific community:

http://en.wikipedia.org/wiki/Scientific_opinion_on_climate_change#Noncommittal_statements

http://www.skepticalscience.com/naomi-oreskes-consensus-on-global-warming.htm

http://environment.newscientist.com/channel/earth/climate-change/dn11654

http://gristmill.grist.org/story/2006/11/13/221250/49

http://www.ucar.edu/governance/meetings/oct07/followup/presentations/n_oreskes_global_warming.pdf

http://www.skepticalscience.com/global-warming-scientific-consensus.htm

http://www.realclimate.org/index.php/archives/2006/11/cuckoo-science/

http://scienceblogs.com/deltoid/2007/02/monckton_on_the_spm.php

http://www.skepticalscience.com/klaus-martin-schulte-consensus.htm

http://www.logicalscience.com/consensus/consensusD1.htm