clipped from: www.enn.com By Mark Kinver
Science and environment reporter, BBC News
A sustainable global food system in the 21st Century needs to be built on a series of "new fundamentals", according to a leading food expert.
Tim Lang warned that the current system, designed in the 1940s, was showing "structural failures", such as "astronomic" environmental costs.
The new approach needed to address key fundamentals like biodiversity, energy, water and urbanisation, he added.