The tragedy of the commons, leave no trace, limited permits, and sustainability are elements of the “Save Half Dome” thread:
http://www.summitpost.org/phpBB3/viewtopic.php?t=59224
I recall The Chief following the proper government channels to help get land reopened to the public/mountaineers. Several less profitable CA state parks are set up to close with a variety of solutions in the works (many of them private rather than governmental). I also recall issues with public access to areas that cross private lands in CO and CA. I see an article portraying a negative view of current land use in Brazil.
This can be a heavy and contentious subject, but what intriguing research or wisdom is out there among summitpost members in regard to public land policies, CA, US, or world? After all, much of what this site is about is at stake.