Links to research and studies about the carnivore diet and regenerative ranching.
Quantis / General Mills / White Oak Pastures
This is a study by General Mills that talks about White Oak Pastures (in Georgia) that uses regenerative ranching methods and documents how for each pound of beef you consume from them results in a carbon negative footprint.
https://quantis-intl.com/casestudy/general-mills/
Tomkat Ranch
They do not sell their meat online, but they have a lot of information about Regenerative Ranching.