More Desertification

I'm not sure really how to do the link thing but here's an article.
http://web.ebscohost.com/ehost/detail?hid=114&sid=72b58860-fae9-4de6-a9db-87bcf8eae90c%40sessionmgr102
This short article mentions the 1977 United Nations conference on desertification, which shows that this problem has been present for a while.
- John