A gas about cows

Cattle grazing in the late afternoon sunlight, a peaceful bucolic scene.

Cows are known to produce huge amounts  of methane from their digestive processes.  It's a gas  which makes a far more serious contribution to global warming than CO2. (But methane produced by the burping of cows is still a fraction of that created by human activities and natural processes eg bogs.)

Eating less meat  and dairy products will eventually lead to fewer gassy cows in the world but in the mean time experiments demonstrate that adding a certain sort of seaweed (yes!) to a cow's diet can reduce the amount of methane they emit. It can't be spread on the land though, it only works if it's incorporated in an artificial diet fed to indoor cattle. (And they don't much like the taste.)

(It seems quite normal that I/we now think these thoughts, about methane and global warming  and meat-eating , when I/we see a  peaceful bucolic scene. There's nothing that doesn't impinge upon our global future.)

https://www.bbc.co.uk/news/uk-england-leeds-59218608

https://www.abc.net.au/news/science/2021-03-18/cows-fed-seaweed-methane-emissions-reduced-82-per-cent/13253102