Not a joke

No, this isn't a joke. But while it sounds ridiculous, it may actually work to solve two of our pressing environmental problems: the pollution of lakes and streams with nitrogen runoff, and our high level of agricultural greenhouse emissions. The first will help make New Zealand a better place for all New Zealanders (by ensuring for example that we can still go swimming), and the second will ensure that we meet our Kyoto targets (and in the process probably save a large amount of money). And as a bonus, it should improve pasture growth - meaning better returns to farmers. The question is just how to deliver it...