http://gristmill.grist.org/story/2007/4/21/17933/8186/#comment17

This just in.  Wind/wave power stations offshore that supply freshwater refined from ocean water by reverse osmosis pumps.

This could irrigate land in dry areas like the US southwest.  wind/wave electric powered pumps could reverse the usual flow of water from rivers into southern California's ag zones, providing water that is pumped inland, even as far as Arizona.

The vegetation enabled by this irrigation with refined sea water could sequester CO2 and provide huge amounts of water vapor. The resulting clouds reflect more sunlight. Just as rain forest in tropical zones produce extra clouds.

The double effect of more reflected sunlight from clouds and CO2 absorption by plants on the irrigated land provides the necessary cooling. A lot of areas like this exist across the planet.  In Africa and the middle east where food and clean water and energy production would create much needed jobs.  Now these regions are increasingly  drought stricken by global climate change from GHGs.

Stop the presses.  Branson, cough up the dough. These maybe the devices his 25 million dollar contest is looking for?

Oil rich nations even have the cash that would be better invested in this technology than the war machinery and jihad they now fund.