Irish scientists have discovered that adding just a small amount of fish oil to the diet of cattle can vastly reduce the amount of methane produced by, ahem…cow farts.

Climate scientists have long known that, pound for pound, methane is 20 times more powerful than carbon dioxide at trapping the suns rays, making it a highly potent greenhouse gas. An incredible 900 billion tonnes of the noxious fumes are produced each year by methanogen bacteria that live in the digestive systems of ruminants such as cattle, sheep and goats.

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