Where do a zebra’s stripes, a leopard’s spots and our fingers come from? The key was found years ago — by the man who cracked the Enigma code.

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What’s that too-often quoted aphorism? “Good artists copy; great artists steal”? In this nuanced conversation, biologist Janine Benyus speaks with Tim Brown, chief executive of IDEO, to discuss what’s really interesting about borrowing.

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DNA barcoding is a very precise way of identifying plant species. DIY biotech evangelist Ellen Jorgensen takes us on a field trip to find and identify Alaskan plants.