FINANCIAL TIMES 🔒| The rise of industrial-scale livestock farms in the US has put cheap meat on consumers’ plates, but it also has environmental costs. Among them are emissions of methane.
The powerful greenhouse gas forms when wet dung decomposes anaerobically in open slurry pits, a design feature of larger swine and dairy operations.
In the US, some farmers and utilities are trying new ways to capture the waste gas and convert it to fuel. “Renewable natural gas” builds on the established technology of biogas, further refining it for shipment on commercial pipelines.
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