UC Davis researchers say methane emissions were reduced by more than 30 percent in Holstein cows that ate feed mixed with just a little bit of ocean algae in a recent study.
Methane is a potent greenhouse gas, more potent even than carbon dioxide.
Scientists are calling the findings surprising.
They're planning a six-month study of a seaweed-infused diet in beef cattle starting in October.
To learn more about the study, click here.