http://www.truthdig.com/report/item/20090309_we_are_breeding_ourselves_to_extinction/
Lovelock advocates nuclear power and thermal solar power; the latter, he says, can be produced by huge mirrors mounted in deserts such as those in Arizona and the Sahara. He proposes reducing atmospheric carbon dioxide with large plastic cylinders thrust vertically into the ocean. These, he says, could bring nutrient-rich lower waters to the surface, producing an algal bloom that would increase the cloud cover. But he warns that these steps will be ineffective if we do not first control population growth. He believes the Earth is overpopulated by a factor of about seven. As the planet overheats—and he believes we can do nothing to halt this process—overpopulation will make all efforts to save the ecosystem futile.