I will post if I have time and something to say, but I think devoting time to this wormhole stuff would be more useful for me & others, than commenting on the matters that I don't know about them, as good as this one.
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This page contains some links to interesting articles. I suggest reading them; however those are rather old, but consider the progress in this field is unfortunately slow:
http://www.earthtech.org/press/index.html
For example, this article is informative IMO:
http://www.earthtech.org/press/2004....ation_week.pdf