The original article may be found [here].
I discovered the violation on a hunch -- the article was too good! It was easy to find it on the web -- I simply searched for an unlikely combination of words at Google, and found the exact same text on the Nova site.
Quite separately, I'd like to say that any organization receiving government funding of any kind ought to be required to release their work into the public domain, but that's a different story.
Maybe we should talk about this as a potential problem: CopyrightTalk.
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