Even after 2,000 years of the sea’s harsh beating, a Roman harbour built with a mixture of standard concrete and volcanic ash is still intact. * Electro-accretion – essentially sticking concrete-like minerals on galvanized underwater structures – means electrified steel mesh could eventually be used to reinforce and repair underwater concrete structures. * Ocean thermal electric conversion - or Otec plants, in which warm surface waters interact with cold water “upwelled” from the deep ocean to drive a large power turbine. The cool water pumped to the surface contains the exact ratio of nutrients – including phosphorus – needed to support plant growth. supercharged by Otec’s nutrient-rich byproduct. At the bottom of this food chain, algae will feed fish, which feed bigger fish, which will in turn feed seafarers and land-lubbers alike. Sinking fish waste and seaweed detritus will gradually sequester carbon dioxide from the atmospher #FutureEarth #DevelopEarthRight
Posted on: Sat, 02 Nov 2013 11:33:59 +0000
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