"The sun doesn't always shine; the wind doesn't always blow", notes Simon Forrest, the CEO of Scotland- based tidal-power producer Nova Innovation. IN 1851, CHARLES BABBAGE, THE ENGLISH MATHematician and inventor, found himself preoccupied with what might happen should coal mines - then and now one of the primary sources of usable energy - become depleted. Nova, in particular, has other advantages: where the O2 floats, Nova's turbines lie beneath the ocean surface. [Extracted from the article]
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