I've just finished reading the September edition of 'Scientific American'. It's a special edition (one subject for various articles) entitled 'Energy's Future:Beyond Carbon' and the subject is technological change necessary to reduce carbon emissions. After the Introduction there is an overview that divides this task up into "wedges" of different technological and policy changes that have to be undertaken to avoid catastrophic global warming. Seven articles on various aspects of these changes follow. They are about:
7)Various more "fanciful" options
More on this issue later.