By 2050 the world will be faced with the enormous challenge of feeding 9 billion people despite being affected by climate change, rising energy costs and pressure on food growing land and other major resources. How will the world produce 70% more food by 2050 to feed a projected extra 2.3 billion people? What will be the impact of food shortages and high prices on areas in crisis such as sub-Sahara Africa? Where will future production growth come...