That's a pretty appalling situation up there and very relevant to my part of the world where an electricity generating tidal barrage for the Severn's being planned despite all reasonable objections on environmental grounds.
These green solutions to our problems with energy supplies pose some very difficult questions, at least those posed by the hydo scheme on the upper reaches of the Garry have a chance of being resolved, I'm not too optimistic about the Severn though.

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Musha rig um du rum da