Homeless Martians with Squeegies?

[Dave Land]

"[New Scientist Magazine] said something -- or someone -- had regularly 
cleaned layers of dust from the solar panels of the Mars Opportunity 
vehicle while it was closed down during the Martian night."

http://www.reuters.com/newsArticle.jhtml?type=topNews&storyID=7161248
And, for everyone but Warren:
http://tinyurl.com/3tewj
Dave
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