Does The Sun Warm The Earth?

They're not talking about this in Copenhagen.

Scientists at Zurich's Federal Institute of Technology have found that solar activity caused Alpine glaciers to melt in the 1940s at rates faster than today's pace, even though it's warmer now.

The study found that the sun in the 1940s was 8% stronger than average and far more powerful than it is today. It also concluded that solar activity was weaker from the 1950s to the 1980s, an era in which the glaciers advanced.

The Swiss researchers are spinning their own work, saying that the evidence doesn't mean the public can stop worrying about man-made warming. But their finding validates other researchers who have said solar activity has a far greater impact on temperatures than human CO2 emissions.