When environmentalists said that cattle were responsible for 8% of climate change it set the industry working on a solution. Immediately university scientists pointed out the math was faulty and the real number was 2%. I think there is now broad consensus that the number is 2%.

Then several groups learned that you could feed cattle a small amount daily of a certain seaweed in their ration and it would reduce emissions by 75%. But the problem was the seaweed only grew off the North coast of Australia.

I know of two startups, one on the west coast and another one on the east coast that are doing breeding to allow the seaweed to grow in American waters. Now a group of New Zealanders have found another solution which maybe easier to produce at scale.