A darling of many climate-change skeptics is a physicist who has done his own analysis and concluded:

The earth is indeed getting warmer. Global average land temperatures have risen 0.91 degrees Celsius over the past 50 years. This is “on the high end of the existing range of reconstructions.”

The rate of increase on land is accelerating. Warming for the entire 20th century clocks in at 0.73 degrees C per century. But over the most recent 40 years, the globe has warmed at a rate of 2.76 degrees C per century.