http://www.cbc.ca/technology/story/2008/02/15/tech-carbon-capture.html
S.2 tells us about an article about new crystals that have been created that absorb greenhouse gasses.
"Scientists have created metal-organic crystals capable of soaking up carbon dioxide gas like a sponge, which could be used to keep industrial emissions of the gas out of the atmosphere.
Chemists at the University of California Los Angeles said the crystals — which go by the name zeolitic imidazolate frameworks, or ZIFs — can be tailored to absorb and trap specific molecules."
The crystals could be particularly used for scrubbers in power plants as they are durrable and easy to produce.