https://www.conservativewoman.co.uk/this-methane-nonsense-is-a-nasty-protection-racket/

"...Let’s consider a few facts that might show this racket for what it is. First, there is no evidence that the natural emission of methane from ruminants (or decomposition of vegetation in marshes or burning oil and gas) has the slightest effect on the temperature of the earth. Methane is a trace gas which comprises roughly 0.000193 per cent of the atmosphere – about 1,930 parts per billion. It breaks down to its constituent parts of carbon and hydrogen over an estimated 7-10 years.

The other bogeyman, CO₂, without which life would not exist, is about 0.04 per cent or 430 parts per million.

It’s interesting to compare the number of cattle in the US in 2024 – 87million – with the number of ruminants that grazed the grasslands of the continent before the white man got going there in the 1800s. The best estimate is that there were 60million bison, 45million antelope, 60million deer and elk, 2million bighorn sheep and a million moose. Roughly speaking, there were twice as many ruminants 250 years ago as there are cattle today. One wonders what happened to all that methane they must have created over centuries, while at the same time their grazing and dung made the plains of the Midwest some of the deepest and most fertile soils in the world.