More importantly, the previous warm periods can not be due to human CO2 as the IPCC claims for current temperatures. (drtimball.com)
What this paper does offer is an incremental revision in how scientists might interpret current temperature data, with an eye toward improving their ability to accurately predict global warming trends in the future. (psmag.com)
Which means current temperatures are significantly higher than they were in the 1970's. (realclimate.org)