How do we eat and protect the planet? In its latest report, France's GIEC (Group of Intergovernmental Experts on Climate Evolution) underlines the link between global warming and agricultural soil erosion, an alarm call which suggests changes are needed in the way we produce and consume food. So should we all become vegan? Not necessarily, say nutritionists. While advocating reduced meat consumption and tackling food waste, one doctor cautions against eco-friendly humans missing out on vital nutrients. WEB VERSION