Science and technology

Associated Press
This photo provided by NASA shows Christina M. Hammock. NASA has eight new astronauts _ its first new batch in four years. Hammock is one of the candidates. Hammock, 34, calls Jacksonville, N.C. home. Hammock holds undergraduate and graduate degrees from North Carolina State University, in Raleigh, N.C. She currently is serving as National Oceanic and Atmospheric Administration (NOAA) Station Chief in American Samoa. (AP Photo/NASA)

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