Link to the news release and report from the National Academies about global warming temperature research with the introductory blurb, posted here.
High Confidence in Surface Temp Reconstructions Since A.D. 1600
June 22 -- There is sufficient evidence from tree rings, retreating glaciers, and other "proxies" to say with confidence that the last few decades of the 20th century were warmer than any comparable period in the last 400 years, according to a new National Research Council report. There is less confidence in reconstructions of surface temperatures from 1600 back to A.D. 900, and very little confidence in findings on average temperatures before then.
