> It's clearly looking for free air capture, rather than using smokestacks > as a starting point. As Eli has pointed out, that isn't necessarily the > best choice, but OTOH it has the advantage of being location-free.
Given that carbon capture and storage is mature, for example, many ethanol and ammonia plants routinely capture CO2 and sell it to the fizzy drinks industry; we have no problem storing huge volumes of natural gas underground for the winter season, I've been wondering why there's only a few demonstration projects to date. I think a major reason is that carbon capture and storage has a very obvious monetary and energy cost, which can be easily alloacted directly to the CO2 reduction benefit. Efficiency measures or renewables are stuff where the cost is much more difficult to pin down, and where there are other benefits besides CO2 storage. So, it's neither clear that there is a cost, or how high it is, and how much of it pays for things other that CO2 reduction. People in favour of renewables or nuclear often claim that these technologies are either cheaper than the competition, or are cheaper when taking into account say energy security benefits. ---------------------- Just saw this article in German, which fits into this thread: http://www.welt.de/wissenschaft/article729976/Die_Katastrophe_ist_kaum_noch_aufzuhalten.html "The catastrophe is barely avoidable now If greenhouse gas emissions don't go down substantially by 2020 at the latest, global warming will bring about irreversible processes, like the melting of Greenland's glaciers ... This is the conclusion of the so far unpublished report of the third IPCC working group" (Translation mine) --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups Global Change ("globalchange") newsgroup. Global Change is a public, moderated venue for discussion of science, technology, economics and policy dimensions of global environmental change. Posts will be admitted to the list if and only if any moderator finds the submission to be constructive and/or interesting, on topic, and not gratuitously rude. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/globalchange -~----------~----~----~----~------~----~------~--~---
