Do we really know the cause of Global Warming?

''But did anyone tell you that in east Antarctica the Adélie penguins and Cape petrels are turning up at their spring nesting sites around nine days later than they did 50 years ago? While sea-ice has diminished in the Arctic since 1978, it has grown by 8% in the Southern Ocean.
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Climate history and related archeology give solid support to the solar hypothesis. The 20th-century episode, or Modern Warming, was just the latest in a long string of similar events produced by a hyperactive sun, of which the last was the Medieval Warming.

The Chinese population doubled then, while in Europe the Vikings and cathedral-builders prospered. Fascinating relics of earlier episodes come from the Swiss Alps, with the rediscovery in 2003 of a long-forgotten pass used intermittently whenever the world was warm.
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More cosmic rays, more clouds. The sun’s magnetic field bats away many of the cosmic rays, and its intensification during the 20th century meant fewer cosmic rays, fewer clouds, and a warmer world. On the other hand the Little Ice Age was chilly because the lazy sun let in more cosmic rays, leaving the world cloudier and gloomier.

The only trouble with Svensmark’s idea — apart from its being politically incorrect — was that meteorologists denied that cosmic rays could be involved in cloud formation. After long delays in scraping together the funds for an experiment, Svensmark and his small team at the Danish National Space Center hit the jackpot in the summer of 2005.

In a box of air in the basement, they were able to show that electrons set free by cosmic rays coming through the ceiling stitched together droplets of sulphuric acid and water. These are the building blocks for cloud condensation. But journal after journal declined to publish their report; the discovery finally appeared in the Proceedings of the Royal Society late last year.
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Related books:
- The Manic Sun: Weather Theories Confounded (here)
- The Chilling Stars: A New Theory of Climate Change (here)

"Man-Made Global Warming" Hypothesis (Correlation does not prove causality!)
''Robinson said that people need to look at the facts, and realize that “correlation does not prove causality.” 31,000 scientists agree. But what about the rest of the American population? “Winston Churchill once said that Americans always do the right thing after they’ve tried everything else,” said Robinson. “Maybe that’s what we’re going to do this time. But there will be a lot of suffering.”

In this article Robinson discusses how limitations on energy usage and associated technological developments are likely to have catastrophic, negative impacts upon poor populations of the world, denying them use of lower cost energy sources that they could use to better their standards of living and health standards, and consequently lead to social upheaval as people groups and nations inevitably come to conflict over acquisition of unnecessarily scarce energy resources.'' [source]