Why are we trying to figure out how to feed 2 billion more people? We are not adequately feeding the population we have now. I think a key part of this discussion has to be population control. The earth’s resources are finite. Water is already precious. There is a number above which we simply can’t sustain the population. Why wait until we hit that point? We need to set a course now to decrease the population to a much more sustainable level. Set a world wide limit of one child per couple. Every person who reaches an agreed upon age gets 1/2 a voucher. Form a union with another, combine the vouchers for one child, save it, use it, sell it, give it away, your choice. Break up, form a second union, no more vouchers. Might actually induce people to give it a little thought. If we do not have the will to make this sacrifice, we are really not serious about the problem. And that’s the real problem, the world is not all that serious about the problem. Especially in the good old USA under president dimwit.