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Space Travel and Exploration

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Article Image Radio/TV • Space Travel and Exploration Host:

Program Date:

Harris Kenny (Communications Manager of Aleph Objects) provides an update on their desktop 3D printers - John Whitehead (Rutherford Inst) provides and update on American Civil Liberties - Michael Belfiore (Author, Journalist) reports on the private s

Article Image News Link • Global

http://www.wired.com, By Charles C. Mann

Between 1405 and 1433, Zheng set out from China on massive naval expeditions that reached as far as Mecca and Mombasa, journeys with more than 300 vessels and 28,000 crew, excursions far bigger and longer than those of Columbus more than a half centu

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