Pelletier N, Pirog R, Rasmussen R (2010). "Comparative life cycle environmental impacts of three beef production strategies in the Upper Midwestern United States", Agricultural Systems 103 (2010) 380–389  This paper compares three US beef rearing systems. Cattle are finished either in: feedlot systems (having received hormone implants); backgrounding systems (also with hormone implants); or on pasture (no implants).

This report, published in 2010 by the Commission for Rural Communities, argues that the English uplands are landscapes that provide a wealth of natural and cultural assets and have potential to generate many valuable public goods and market products, supporting a low carbon future and green economy.

The OECD and FAO have published their latest joint Outlook report. Key points as follows: The macroeconomic environment underlying the commodity projections is more positive than in the 2009 Outlook.

Burney J A, Davis S J and Lobell D B (2010). Greenhouse gas mitigation by agricultural Intensification, PNAS.

 Popp A, Lotze-Campen H and Bodirsky B (2010). Food consumption, diet shifts and associated non-CO2 greenhouse gases from agricultural production, Global Environmental Change 20, 451–462 

Edited By Keith Smith Nitrous oxide, N2O, is the third most important (in global warming terms) of the greenhouse gases, after carbon dioxide and methane. As this book describes, although it only comprises 320 parts per billion of the earth's atmosphere, it has a GWP nearly 300 times greater than that of carbon dioxide.