[taylan]

I find these graphics by WRI particularly useful in understanding the different angles to this problem:

http://www.wri.org/blog/global-food-challenge-explained-18-g...

As a geneticist, I'm more than slightly offended that they don't include GMOs in the arsenal of solutions though.

[JoeAltmaier]

Yes, the sensitive folk who object to GMOs will get shouted down soon, I hope, when people need food and it isn't there.

Myself, I look forward to microchips that manufacture carbohydrate and protein chains directly from electricity and air (water?). Then food, water and energy will truly become fungible commodities. And grain becomes irrelevant.