Senator ROBERTS (Queensland) (14:33): As the World Economic Forum were meeting in Davos last month, the United States Special Presidential Envoy for Climate, John Kerry, stated that agriculture accounts for between 26 and 33 per cent of world emissions and will account for half a degree of warming by 2050. He further stated that a warming planet will grow less food, not more, and so farming needs to be a major focus of reducing human carbon dioxide production. Minister, how do you reconcile the production of food accounting for between 26 and 33 per cent of emissions with your figure of 17.7?