After all, the Realtors keep telling us "they're not building any more land".
However, hydroponics is starting to take off and it could soon be the case that we could have large skyscraper farms growing beef and supplying hamburgers to everyone in China and even all those in India who won't have to worry that they might be eating uncle Raj.
Clean Energy + Vertical Farming will enable food production at an enormous level and end world hunger.
Again the Malthusians are wrong because they never add human ingenuity into their predictions.
As it is today, most food shortages are due to poor governments, inadequate food distribution and storage and low technology farming practices.