Water rights:
Who is buying up the water rights?
https://popularresistance.org/wall-street-mega-banks-are-buying-up-the-worlds-water/
http://www.newsweek.com/race-buy-worlds-water-73893
https://seekingalpha.com/article/24410-t-boone-pickens-invests-in-water-should-you
http://newsfocus.org/water_grab.htm
https://en.wikipedia.org/wiki/Water_trading
So the big wigs are buying up the water, and Monsanto is trying to get ownership of food and seeds. What could go wrong?