Humans consume more calories from rice than any other food. But rice is grown by keeping paddy fields immersed in water, and microorganisms in the wet soil produce greenhouse gases.
Rice farming accounts for 1-2% of manmade greenhouse gas emissions. Slash-and-burn deforestation to clear land for rice farming also releases CO2.
Crustaceans like shrimp and lobster make up only 6% of the world's fishing catch, but they account for 22% of fisheries emissions, according