There are methods to reduce or eliminate CO2 from other gasses, its just a matter of money and effort.
The carbon dioxide is being controlled on the space station and all the other manned space craft.
Why would it not be possible to do that in industrial situation.

There are some questions and answers on the subject of global warming at this site.

http://cdiac.ornl.gov/pns/faq.html

There is information on the web about CO2 and how it can be separated or otherwise neutralized.

Three such sites:

http://www.seed.slb.com/en/scictr/watch/climate_change/capture.htm

http://www.sciencemag.org/cgi/content/abstract/156/3781/1481

http://pubs.acs.org/cgi-bin/abstract.cgi/enfuem/2001/15/i02/abs/ef0002391.html

There are methods of removing the oxygen from the carbon.

http://answers.yahoo.com/question/index?qid=20080228004623AAhoVij

Both oxygen and carbon are important and useful elements, why not separate them from each other.

All it takes is money:

http://www.fossil.energy.gov/programs/sequestration/capture/

The only problem is that even if this was done on a global scale it would not solve the climate change problems, simply because the climate change is not caused by the CO2. (The problem is nuclear, at least in my opinion.)