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Bioengineers learn to fold DNA into complex shapes, which researchers hope will one day revolutionize manufacturing, medicine and computing. WSJ's Robert Lee Hotz reports on how scientists are manipulating DNA's chemical rules.

http://online.wsj.com/video/scientists-take-a-page-from-origami-and-fold-dna/7CF55C64-D465-4599-A3A5-2E1FF24B73B9.html