[jamesgagan]

This is discussed in the article: "Some scientists have suggested that grass-finished beef, if managed properly, can be a more sustainable option: As the cattle graze, they stimulate grass to grow deep roots and pull more carbon into the soil, helping to offset the cows’ climate impact. But, on the flip side, grass-finished cattle also take longer to reach slaughter weight, which means they spend more time burping up methane into the atmosphere. Because of this, some studies have suggested that grass-fed beef can actually be worse for the climate over all, though the debate about this continues to rage.

For now, it’s hard to say with confidence that grass-fed beef is consistently more climate-friendly than conventional beef."

[leekyle333]

I'd love to see more research on this, I just wonder who would actually do it.

[passiveincomelg]

Links from the article:

http://www.futureoffood.ox.ac.uk/grazed-and-confused

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4494320/