I've read this cows/seaweed story now often enough that I looked into it. It seems it's all based on a study on 12 cows performed by UC Davis [1].

That is... not exactly confidence inspiring. It may very well be a statistical fluke and the reality is much less reassuring.

Not saying we shouldn't research in that direction, but this looks way too early to be confident in it.

[1] https://animalscience.ucdavis.edu/news/research-led-ermias-k...