There is an N in that formula, though, so burning ammonia is going to result in nitrous/nictric oxide. NOx is also a greenhouse gas (indirectly, apparently), an

There is an N in that formula, though, so burning ammonia is going to result in nitrous/nictric oxide. NOx is also a greenhouse gas (indirectly, apparently), and the hazy brown component of smog. One of the oxides is laughing gas. On the whole, I think pumping CO2 into the atmosphere is better than pumping smog and laughing gas.