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Aliens May Be Here on Earth

Prof. Paul Davies of Arizona State University says that alien life may be on earth right now and may have arrived at various other times in the earth's geologic history.  Raphael G. Satter has an Associated Press story, which I found on, that says these alien life forms could be simple microbial life forms.  The article doesn't say, but my presumption is that if such creatures exist they could have arrived on meteors that impacted earth over the eons.

Less than 1% of the microbial life form on this planet have been identified, so there is ample room for aliens to be hiding incognito.  Be careful when somebody sneezes - it could be an alien attack.

Disclosure: No stocks mentioned.