CO2 "nets'' are developed by producing large amounts of algae and stacking them vertically. This algae is remarkably effective at trapping CO2 and releasing pure oxygen and nitrogen in it's place. This algae can then be broken down and sold as biodiesel, increasing it's financial feasibility.
The main downfall of this method is that it takes enormous amounts of this algae to make a reasonable impact on CO2 emissions (it would take a net the size of wal-mart to make an impact on emissions from a power plant.)
Maybe this isn't a final solution for the GHG crisis, but it takes radical thinking to achieve radical results!
More information can be found here: http://www.sciencedaily.com/videos/2007/0407-possible_fix_for_global_warming.htm
