Warmest Decade Ever

Except for a leveling off between the 1940s and 1970s, Earth’s surface temperatures have increased since 1880. The last decade has brought temperatures to the highest levels ever recorded, and the last year of the decade (2009) was tied for the second warmest year in the modern record, a new NASA analysis of global surface temperature shows. The analysis, conducted by the Goddard Institute for Space Studies (GISS) in New York City, is based on temperatures recorded at weather stations around the world and satellite data over the oceans. NASA Earth Observatory

Not that facts ever get in the way of global climate change deniers, here's another massive pile of data showing what's going on.