In 2009, Rockström et al published a paper in Nature which proposed the concept of nine planetary boundaries, which we must keep within if we are not to suffer potentially catastrophic consequences. More recently Nature has published an interesting opinion piece on the boundaries idea.  

The UK’s Environmental Audit Committee has published its report on Sustainable Food.  Its member MPs conclude that “Government must develop a joined-up strategy to change the UK's unhealthy and environmentally damaging food system, as fears mount about global food security.”

WWF has published its latest biennial report on the state of the planet in time for the Rio+20 summit in June. 

In the mailing on 15 May 2012 we highlighted this paper by Seufert et al, published in Nature, which compared yields in organic and conventional farm systems. The study elicited a great deal of media comment and in response the study’s authors have written this interesting piece which you can read here.

A report published by the National Trust entitled What’s your beef? Compares the cradle-to-farm-gate emissions of ten tenanted National Trust farms, selected as representing a cross section of different beef production systems, including 4 organic, 4 conventional but extensive, and 2 semi intensive farms.

The New Agriculturalist’s May 2012 issue focuses on ‘climate sustainable agriculture’ and features a number of smallholder projects focusing variously on soil carbon, rainwater harvesting, conservation agriculture and so forth.

A new book written for the International Food Policy Research Institute about foreign aid allocation, governance, and economic growth.

This article in the British Medical Journal argues that taxes on unhealthy foods could result in significant health gains. The article highlights a range of trials, studies and natural experiments (ie. observational studies) that examine the effect of price changes on behaviour.