Tyler directs us to this
The second is ‘the nutrition transition’: generations that once lived on grains, pulses and legumes have been replaced by more prosperous people with a taste for meat and dairy. Crops like maize which once fed many of us directly now feed fewer of us indirectly, via a costly diversion from which they emerge in the value-added form of meat. Global production of food – all food – will have to increase by 50 per cent over the next 20 years to cater for two billion extra people and cope with the rising demand for meat.
