From July 31, 2018: For years, Shane Harris of the Washington Post has been fascinated with the search for extraterrestrial life in the universe. But that search raises a profound question: Should we try to communicate with aliens? Is there a risk to alerting a potentially hostile species to our presence? On July 12, Shane moderated a conversation hosted by Future Tense with Lucianne Walkowicz, the chair of astrobiology at the Library of Congress, and NASA astrophysicist Elisa Quintana, to talk about the ethics of the search for ETs and the associated risks with trying to make contact.

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