The world WILL run out of food.

[NorthernRaider]

Part of the problem is a huge part of the US and Canadian Maize crop is now being used to prodice fuel rather than feed people and animals, and in the UK environmentalists are blocking thousands of hill farmers from diversifying in order to survive so the sheep farmers are giving up trying to farm the high ground, and it only takes 6 months of neglect for bracken and heather to replace grass and the land is then useless and fewer sheep are grown.