Climate History and the Sun

The 20th Century temperature pattern shows a strong correlation to output of the Sun.  although the causes of the changing sun's particle, magnetic and energy outputs are uncertain, as are the responses of the climate to the Sun's various changes, the correlation is pronounced.  It explains especially well the early 20th Century warming trend, which cannot have much human contribution.  Drs. Baliunas and Soon present their latest findings on the relationship between the Sun's varying energy output and climate change on Earth.