Earth has a cow problem. Cow agriculture is one of the largest emitters of climate-warming methane to the atmosphere.
But adding a type of red algae known for its methane-inhibiting properties to cow feces might help. Doing so reduces the production of methane within feces by about 44 percent, researchers report July 13 in Frontiers in Sustainable Food Systems. That offers a promising new avenue to reduce overall methane emissions from cattle, the scientists say.