The biggest Gobbler up of CO2 is plants and trees so why are not all these so called greens and invironmentalists not spending the huge revenues from green taxes on developing genetically modified plants designed to grow in deserts and saving the rainforests instead of filling the national debt coffers?
Well, most 'greens' would quite like to save the rainforest though it's not so obvious that this would reduce greenhouse emissions hugely. As for greening the desert... Are you sure it would it work? Both in terms of managing to get plants to grow in desert conditions, and in terms of managing to grow sufficient plants sufficiently quickly to make a difference.
Read the following article on biochar, and also contemplate the train-wreck of a policy that biofuels have proved to be:
BBC NEWS | Science & Environment | Biochar: Is the hype justified?