I would suggest that all who believe in anthropogenic global warming read this. http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VF0-3YS9862-1&_user=10&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_version=1&_urlVersion=0&_userid=10&md5=f5228771e5b2eb13a78e4d93d3f7a004

Climate has changed rapidly in the past without humans. Climate research shows that average temperatures have increased many degrees centigrade in a single decade. The old believe that climate changed slowly in the past is long gone. It is amazing that some people still believe it. http://www.ncdc.noaa.gov/paleo/abrupt/story.html