Paywall, so it's possible the article addresses this, but from my understanding, it is rice cultivated in deep water paddies that contributes to excess methane

Paywall, so it's possible the article addresses this, but from my understanding, it is rice cultivated in deep water paddies that contributes to excess methane emissions, as it creates the conditions for methane-producing anaerobic bacteria. Cultivating rice in shallow water that results in less methane emission is not only possible, but possibly optimal.