Global Warming

Global warming is not the sun's fault, say some scientists.

Our results imply that, over the past century, climate change due to human influences must far outweigh the effects of changes in the Sun's brightness.

Global warming, in part, might be due to cosmic rays but we are not sure , say some other scientists

...the sun has an effect. But I'm also saying it's uncertain how much global warming has to do with the sun and how much is caused by carbon dioxide in the atmosphere
...The greenhouse effect must play some role. But those who are absolutely certain that the rise in temperatures is due solely to carbon dioxide have no scientific justification. It's pure guesswork.

Conclusion: if global warming exists (and the question is not yet decided), we do not yet know the causation. Are you listening Al Gore and David Cameron.

Tags: Astronomy, Global Warming