Library of Congress: Steven Dick on Discovering Life in the Universe www.c-span.org/video/?321524-4/discussion-discovering-life-universe
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Congressional Testimony. web.archive.org/web/20131130031810/http://science.house.gov/hearing/full-committee-hearing-astrobiology-search-biosignatures-our-solar-system-and-beyond U.S. House Science Committee testimony

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