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“clone”

Feb 24, 2012 12:44 PM ET // Trace Dominguez
This Week in Discovery News we recap a story about future zoos, magma on the moon and an exoplanet covered in water.
Dec 9, 2011 04:35 PM ET // Trace Dominguez
Our most commented stories this week were about the ethics of cloning, spying and the psychology of killing.