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Seaweed in Cattle Feed May Fight Climate Change by Reducing Methane Emissions

Scientists in Northern Ireland are doing their best to reduce methane emissions by what is put in cattle feed. Seaweed has been tested to see if it can make a difference in the methane gas let out by ruminants, the group of mammals that includes cattle, sheep, deer, goats, and giraffes. Adding local seaweed to animal feed has already proved effective in Australia, where a 2020 study showed replacing 3% of a cow’s diet with a native Australian seaweed decreased the methane produced by 80%.

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