Most of the studies and methods suggest that rotational grazing or better yet, roaming herds, contribute far more in soils and biodiversity than methane product

Most of the studies and methods suggest that rotational grazing or better yet, roaming herds, contribute far more in soils and biodiversity than methane production. Any time you see cows standing in dirt and mud - that is absolutely not what we're talking about. We're talking about the original American Bison herds of (hundred-)thousands who would move across enormous ranges taking grasses from feet to inches, and fertilizing its re-growth as they move. It makes room for accelerated growth of the grass, right when it is most nutritious and stagnant. Prairie and Savanna ecosystems are far more complex than I initially thought. The large animals are not "big lawnmowers" and it isn't "just grass" that they are working with. The soil is a huge ecosystem of its own, and what we're experiencing globally on many fronts (climate, food security, general increased toxicity of air and water) are largely connected to soil failure from our hubris at thinking we can cultivate the green stuff on top with little understanding of what happens underneath.