http://www.newscientist.com/article/dn12698
Scanned by: Adam Cutsingerover 4 years ago
The idea is to tether millions of vertical pipes across the oceans to pump nutrient-rich deep water to the surface. These waters would fertilise the growth of algae, which in turn fix carbon dioxide. The pipes, reaching to depths of 200 metres, would have flap valves at the bottom operated by the energy of waves, which would push deep water up the pipe.