Last year, NASA provided figures similar to the ones I published (http://climate.jpl.nasa.gov/keyIndicators/). The only difference is between the years 2007 and 2001. The source of the data was the Climatic Research Unit (http://www.cru.uea.ac.uk/).

* The hottest year on record is 1934, not 1998;
* The third hottest year on record was 1921, not 2006;
* Three of the five hottest years on record occurred before 1940; and
* Six of the top 10 hottest years occurred before 90 percent of the growth in greenhouse gas emissions during the last century occurred.