A White House climate initiative has boosted a quixotic search for the “cow of the future”, a next-generation animal whose greenhouse gas emissions would be cut by anti-methane pills, burp scanners and gas backpacks.
Carbon dioxide from fossil fuels is the primary man-made gas warming the planet, but methane is far more potent and the US’s 88m cattle produce more of it than landfill sites, natural gas leaks or hydraulic fracturing.
The US administration’s plan last month to curb methane emissions has given fresh relevance to climate-friendly technologies for cattle that range from dietary supplements and DNA gut tests to strap-on gas tanks.
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