http://newscenter.lbl.gov/2015/02/25/co2-greenhouse-effect-increase/

Re. denialism:

This past weekend a post on Jim Milks’ blog

http://environmentalforest.blogspot.dk/2015/02/james-taylor-has-no-idea-what-hes.html

made me aware of these two James Taylor articles in Forbes:

http://www.forbes.com/sites/jamestaylor/2015/02/25/cold-and-snow-destroy-global-warming-claims/
http://www.forbes.com/sites/jamestaylor/2014/04/30/twenty-years-of-winter-cooling-defy-global-warming-claims/

The first article purports to disprove global warming by focusing on winter in a limited part of the U.S. The second claims a winter cooling trend going back to 1930:

“As U.S. Historical Climatology Network (USHCN) data show, The Weather Channel and Climate Central engaged in deceptive and unscrupulous cherry-picking to mislead readers into thinking a long-term cooling trend was actually a long-term warming trend. The NOAA data referenced and linked above show winter temperatures have been cooling for the past 20 years. U.S. Historical Climatology Network data show the cooling trend extends back even further, all the way to 1930. Nevertheless, The Weather Channel and Climate Central deliberately chose an outlier year, 40-plus years ago (1970), with a winter much cooler than other years immediately before and after, and compared it to a recent outlier year (2012) with a winter that was much warmer than other years immediately before and after.
As the NOAA and USHCN data show, almost any way you slice and dice the data, the United States is in a long-term winter cooling trend. The period 1930-2014 shows cooling. The period 1995-2014 shows cooling. The long-term trend line from just about any other year to the present shows cooling. Nevertheless, a very few data points can be cherry-picked to give the illusion of winter warming, so that’s just what The Weather Channel and Climate Central did.”

“ U.S. Historical Climatology Network (USHCN) data show” links to Steve Goddard’s blog, not to a reliable data source. Not only does Taylor turn a long-term warming trend into a cooling trend, but he then accuses others of using the cherry picking tactics that his own distortions are based on.

I agree with Greg that the tide has changed. I would also add that the evidence – both theoretical and empirical – in support of anthropogenic climate change is so conclusive, that honest* denial is no longer possible.

*I recognize that some septics are so abysmally stupid that a term like honest is irrelevant.