Cows are milked at a dairy farm at the University of California, Davis, where researchers are studying whether adding small amounts of seaweed to cattle feed can help reduce their emissions of methane.
Cows are milked at a dairy farm at the University of California, Davis, where researchers are studying whether adding small amounts of seaweed to cattle feed can help reduce their emissions of methane. Terry Chea AP
Cows are milked at a dairy farm at the University of California, Davis, where researchers are studying whether adding small amounts of seaweed to cattle feed can help reduce their emissions of methane. Terry Chea AP