What about it? Since the major sink of methane in the atmosphere is by reaction with OH radicals, the NOx emissions from ship travel leads to a net global cooli

What about it? Since the major sink of methane in the atmosphere is by reaction with OH radicals, the NOx emissions from ship travel leads to a net global cooling, according to Wikipedia. The main threat of NOx is to the respiratory tract of mammals, very few of whom find themselves in the middle of Pacific.