Comparing organic farming to conventional. Is one better for the environment?

Norman Borlaug, father of the Green Revolution, estimated we could feed four billion people if we used organic farming. The earth now is home to seven billion people and will probably go to nine billion before leveling off and declining, according to the United Nations. Organic farming means 50% of our world population would die horrible deaths. Who should decide who lives?

Alternatively, we could double our farmland and cultivate over 80% [...]