All this praise in favour of ammonia and its many uses; nobody questions why we stopped using it as much, though... It's because of the damage to the environment caused by ammonia/nitrates. I thought everyone knew that. The effect would be visible a few hundred yards from the oh-so-clean clothes, the sparkling machine and pipeworks, at whatever point the effluent comes into contact with nature.

Have we come so far from our idealistic youth?