Wormholes and FTL

No, when I say "Wormholes" I don't mean Saddam's hiding place.

New Scientist reports on some calculations regarding FTL (Faster Than Light) travel, and conclude that it may just be possible. But a bit costly :

To keep the wormhole open wide enough would take a negative field equivalent to the energy that would be liberated by converting the mass of Jupiter.

That's a serious engineering problem.

(Seen via En Banc, an interesting Legal Blog.)