I wrote this for a forum post on the Coursera Sustainability course I mentioned in my last post and figured since I spent time on it I might as well post it here!
Basically I am arguing that the Jonathan Foley TED video “The other inconveient truth” that we were asked to watch says that we need to grow 2 to 3 times more food because of a growing population (the estimate is population stabilizes around 2050 at around 9.6 billion people). So what they are saying is that you need 200-300% more food for 37% more people (assuming world population is currently 7 billion). What do they base this off of? That most demand will come from people in developing nations eating more meat and possibly turning food into biofuels.
I disagree that everybody needs/will be eating the amount of meat people in the current developed nations are eating and that we will continue to turn food into biofuel (which gives you 1.2 units of energy for every 1 unit you put in… in other words a very poor energy ratio).