By Lester R. Brown Peak oil has generated headlines in recent years, but the real threat to our future is peak water. There are substitutes for oil, but not for water. We can produce food without oil, but not without water. We drink on average four liters of water per day, in one form or […]

via Grist http://grist.org/article/peak-water-what-happens-when-the-wells-go-dry