There's also some evidence that as the climate warms growing rice becomes less climate friendly, because it produces more methane. (nutritionfacts.org)
As high latitudes warm under climate change, they are likely to release more methane, which will in turn boost warming, in what is known as a positive feedback. (environmentalresearchweb.org)
At their highest, the bursts contained about 10 times more methane than the background in the atmosphere. (sciencemag.org)