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Sending humans into space through the space shuttle program and now the International Space Station is an important part of NASA's research capabilities. In celebration of World Space Week, Bill Marinelli, Space Communications and Navigation development manager at NASA; Dr. Marshall Porterfield, NASA's Space Life and Physical Sciences director; and Dr. Steve Volz, NASA's Earth Science Director for Flight Programs, talk about NASA's human space exploration programs. (Webcast live October 8, 2014)