Comment by Aachen

> The surface of both of these things hasn't changed much in the last 30 years.

Source?

It was also my understanding that large amounts of habitat (e.g. Amazon rainforest) are lost for agriculture in general, and that cows are a particularly large part of that

Road surfaces I don't specifically know in terms of habitat area loss, but they split up habitat areas, and surely we'll have gotten more road surface as we went from ~6 to ~8 billion people on the planet in the last 30 years? How could that have stayed roughly the same?!