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Do Aliens & UFOs exist? Has man been visited by other races from other worlds? Explore the fascinating evidence for and against the existence of extraterrestrials.
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Please copy/paste the following text to properly cite this How Stuff Works article:
Freudenrich, Ph.D., Craig. "How Aliens Work." 15 May 2001. HowStuffWorks.com. <http://science.howstuffworks.com/alien-physiology.htm> 18 May 2008.
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Please copy/paste the following text to properly cite this How Stuff Works article:
Freudenrich, Ph.D., Craig. "How Aliens Work." 15 May 2001. HowStuffWorks.com. <http://science.howstuffworks.com/alien-physiology.htm> 18 May 2008.
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