
A Sea of Hope
At Johnson-Neles Dairy in Sonoma, 380 acres of undulating green hills under desktop background-blue skies, a farm worker mixes a wheelbarrow of feed for eager cows. On top of the usual blend of hay and grasses, the worker sprinkles a purplish-red powder, like a chef adding a pinch of seasoning to finish a dish. But this powder is no pepper: It’s pulverized Asparagopsis taxiformis, a red seaweed that can dramatically reduce the methane cows emit in their burps, according to studies by UC Davis scientists.