World War A: Aliens Invade Earth

Also known as World War A: When Aliens Attack

7.02 votes20160h 55m

Leading scientists and researchers weigh in on the scenarios that might unfold if aliens find us and decide to visit Earth. Should we even be searching for extraterrestrial life? What are the risks of reaching out, and what are the risks if the Earth is "found" by aliens?.

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Anne SiegeleDirector

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