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Thursday, December 20, 2007
The Editor
Scientific American
415 Madison Ave.
New York, NY 10017-111
Dear Editor,
“Making Carbon Markets Work” by David Victor and Danny Cullenward is an excellent discussion and review of carbon trading concepts and initiatives.
There is, however, no discussion of market possibilities to encourage removal of carbon dioxide from the atmosphere. Perhaps this is a consequence of the common assumption that it is better to capture emissions at source rather than try to deal with them after release.
The sidebar on “The Carbon Trade” focuses on cap and trade and so-called "offset exchange" in connection with the Clean Development Mechanism (CDM). I find the use of “offset” in that context somewhat of a misnomer as the carbon emissions discussed may not be offset in the usual sense. In the example discussed, it is implied that emissions from the developed countries will be compensated by reductions in emissions in developing countries. I suspect the reality in practice will be that increasing emissions from the developed countries will support projects in developing countries which will have somewhat lower emissions than might have occurred without CDM. The total net result will be increased carbon dioxide emissions.
There is developing recognition of a concept that would actually remove carbon dioxide from the atmosphere and convert it to durable char or charcoal, which could then be used to sequester carbon in soil. Some researchers believe the sequestered carbon will play an additional role by significantly improving soil fertility. Interested readers can find information on this concept by searching for “terra preta” on the WWW.
Perhaps policy makers should relax their dogged focus on reducing CO2 emissions and consider the possibility they may constitute an opportunity to enhance the environment for life on earth.
Duane Pendergast