[RehnoLindeque]

From what I've heard most land-use in the world goes towards animal agriculture - mainly for growing feed. Don't quote me, but I think it's over 40% of all land use in the USA. On balance I'd be far more concerned about the destruction of habitat for already endangered wildlife.

[nitrogen]

What percentage of usable land is actually used, and what percentage of that usable land percentage is used destructively?