Of the three steps in CCS - capture, transportation and storage - capture is by far the most costly (almost 70% of the total cost of CCS). So what could really bring the costs down?

Will they be new types of enzymes (see an interesting post on enzymesfor this) for making the CO2 capture process more efficient? Or will it be through better materials for capture? (see here for an interesting update on this). Or could it be a better method of amine-based CO2 capture? Or could it be something radically different like using algae to capture CO2?

What are your thoughts?

Here is a link that might be useful: carbon capture using algae