| http://www.w3.org/ns/prov#value | - That question is being asked with renewed urgency following last week's announcement that American scientists have created from scratch the virus that causes polio, using nothing more than a DNA blueprint from the Net and materials sent through the post (see How to make a killer virus"). ...To continue reading this article, subscribe to receive access to all of newscientist.com, including 20 year
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