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As humankind has progressed, we’ve created a lot of pollution. Scientists now believe other advanced civilizations in the stars would likely have created their own pollution. And spotting that pollution could be the key to finding alien life.

“Scientists Form New Plan to Search for Aliens – IGN News” is categorized as “entertainment”. This video was licensed from Grab Networks. For additional video content, click the “video” tab at the top of this page.