Algae-based carbon dioxide removal sounds promising. There are a few entrepreneurs on AirMiners working along these lines. You can also check out the AirMiners

Algae-based carbon dioxide removal sounds promising. There are a few entrepreneurs on AirMiners working along these lines. You can also check out the AirMiners Index to scan through the other folks working on solutions: http://www.airminers.org/explore http://www.airminers.org/explore