The discussion of food security for the future is one which we should all consider.
Michael Lardelli is Senior Lecturer in Genetics at The University of Adelaide. Since 2004 he has been an activist for spreading awareness on the impact of energy decline resulting from oil depletion. He has written numerous articles on the topic published in The Adelaide Review and elsewhere, has delivered ABC Radio National Perspectives, spoken at events organised by the South Australian Department of Trade and Economic Development and edits the (subscription only) Beyond Oil SA email newsletter. He has lectured on "peak oil" to students in the Australian School of Petroleum.
The concluding paragraphs of the well researched article state
By 2050, if Australia is to survive as a nation, our agriculture will need to have adapted to climate change, instituted radical measures to recapture and recycle nutrients (e.g. using human and animal wastes as fertiliser) and have, somehow, compensated for the loss of cheap and plentiful fuel. We have not even begun to move in the direction of the more local, intensive but lower energy agriculture that will be necessary and we have less than four decades to accomplish it! In the face of these challenges it is highly unlikely that we will be able to support 36 million people. Indeed, even supporting our current population might prove a significant challenge.