Fog Less Frequent Recently in San Francisco, Cause Uncertain

http://www.reuters.com/article/idUSN1519071620100215

Climate change threatens fog and redwoods -study
Mon Feb 15, 2010 3:00pm EST
* Fog 33 percent less common than 100 years ago


WASHINGTON, Feb 15 (Reuters) - The coastal fog that gives San Francisco its romantic ambience is thinning out, a boon to drivers but a real threat to the giant redwoods there, researchers reported on Monday.
It in unclear if natural climate variations or human activity is to blame, but the result could be the loss of trees, they reported in the Proceedings of the National Academy of Sciences.....

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