This Working Paper, "Can Totnes and District Feed Itself? Exploring the practicalities of food relocalisation", by Rob Hopkins, Mark Thurstain, Goodwin and Simon Fairlie takes the need to reduce oil dependence and GHG emissions as a starting point to explore how Totnes and District (for overseas viewers this is in Devon, the South west of the UK) can develop a food system with the following qualities: fully contributing to the 80% or higher cut in carbon emissions by 2050

This article in the New Scientist entitled 'Methane controls before risky geoengineering, please' by Prof. Kirk Smith, makes the following points:

This paper argues that organic agriculture can feed the world. The authors state that the principal objections to the proposition that organic agriculture can contribute significantly to the global food supply are low yields and insufficient quantities of organically acceptable fertilizers. They evaluate the universality of both claims.