Adding Sustainable Energy: Without the Hot Air to the reading list. From TEDxWarwick.

"As with oil, it’s possible to envisage ‘peak food’ (the point of maximum production, followed by decline), ‘peak phosphorus’, i.e. the high point in the use of phosphate fertiliser (one estimate puts it at 2035), and, as the FAO suggests in its diplomatic way, ‘peak land’: the point at which the total area of the world’s most productive land begins to diminish (soil exhaustion, climate change) and marginal land comes up for reassessment."

One interesting point is the reducing water consumption is only half the story. Gary Woodard, at the Sahra Center, talks about the "water-energy nexus": "the idea that it takes water to produce energy, and energy to take advantage of water. That is, supplies of water and power are interdependent".