The development of cocoa trees strong enough to keep up with the world's chocolate demands has scientists in frenzy as global consumption is forecast to rise by 25 per cent in the next eight years.Demand for the product will increase by roughly 5 million metric tons by 2020 according to food companies and commodity traders while this year's supply is already expected to fall short. 'The crops don't perform well. They're aging pretty badly. Farmers don't have a lot of tools and training,' Andrew Pederson, the global chocolate manager for candy company Mars, Inc, told ABC. The current trees are reported as old, fragile and low-yielding in their crops. And in Ivory Coast and Ghana, home to the world's top two cocoa suppliers, dry weather and a civil war in Ivory Coast - at one point banning the export of cocoa - have as well hindered production. Agronomists in response to the expected shortfalls say they are working to graft new kinds of cocoa tree...