Welcome to European Tribune. It's gone a bit quiet around here these days, but it's still going.
Actually the accusations are probably true. Wind power can slow the motion of the earth. Using the forces of the tide definitively takes its energy from the rotation of the earth, and the more friction the tide has to overcome, the more energy gets lost from the rotation.
But with ~ 10^26 J stored as rotation energy, this is not a short term issue to worry about.

However, I think you can run some distance in front of the tide, to speed earth up again. The trick is more to be in the right position to the moon, than to run ultra fast.

Der Amerikaner ist die Orchidee unter den Menschen
Volker Pispers

by Martin (weiser.mensch(at)googlemail.com) on Fri Jan 23rd, 2009 at 05:32:06 PM EST
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