Jehovah's Witnesses seem to have drifted toward the political notion of "intelligent design" in recent years. Several times since 1996 their literature has referenced the book Darwin's Black Box by Michael Behe, which book has become a kind of bible for IDers. The book introduces the notion of "irreducible complexity" in a formal way as disprove of evolution. Behe's claims have been thoroughly refuted in the scientific literature, and of course, Behe never even attempted to get a peer-reviewed article published. Hence, his resorting to the popular press.
Behe's latest book, just published, is called The Edge of Evolution. In it Behe attempts to argue that mutations really do nothing for evolution by natural selection -- a real surprise to scientists. One scientist, Jerry Coyne of the University of Chicago, wrote a short but sweet refutation of Behe's latest claims in The New Republic. Here is a link: http://richarddawkins.net/article,1271,The-Great-Mutator,Jerry-Coyne-The-New-Republic . I had bought Behe's book a few days ago and got through the first three chapters. I'm not a biologist and have not the background to engage in any refutation like Coyne's, but I smelled something real fishy, and Coyne clearly pointed out why.
Coyne wrote a general refutation of intelligent design: http://richarddawkins.net/article,1058,The-Case-Against-Intelligent-Design-The-Faith-That-Dare-Not-Speak-Its-Name,Jerry-Coyne-edgeorg
AlanF