An Australian farmer has found a way to both completely nullify the carbon output of his tractor, and save himself a metric insane amount of money. Cost effective carbon sink! And it saves him money to the tune of $500,000 (AUS) per year.
Apparently sinking his tractor's emissions also traps with it a great deal of nitrogen and phosphorous, both compounds that farmers usually shell out great deals of money to add to their crops. Nitrogen is necessary for plants to make protein, and phosphorous is necessary in lesser amounts to maintain metabolism. The farmer hopes that this will help keep his farm afloat during these times of worldwide competition, drought, and other headaches for farmers.
Australia, also, benefits greatly from this farmer's discovery. Despite having the best source of uranium in the world, Australia gets most of its electricity from coal power. (Australia also has considerable coal deposits.) The nuclear source is avoided because of environmental fears. This way, the excess carbon from the coal could be plowed into Australia's fields, saving it money and helping the environment, without a singular nuclear action.
The world's two biggest carbon producers, the United States and China, also have considerable farmland that could sink their carbon out of existence. Everyone wins. (Except the fertilizer companies.)