Masks for cows aim to filter burps to curb greenhouse gas emissionshttps://www.ctvnews.ca/climate-and-environment/masks-for-cows-aim-to-filter-burps-to-curb-greenhouse-gas-emissions-1.5251619
https://www.ctvnews.ca/climate-and-environment/masks-for-cows-aim-to-filter-burps-to-curb-greenhouse-gas-emissions-1.5251619
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